Initial population of ttml11 subtree (part deux). ttml1-BASELINE
authorGlenn Adams <glenn@skynav.com>
Wed, 11 Apr 2012 23:10:40 -0600
changeset 240 d1300a76da8f
parent 239 9bbcbd072f4f
child 241 3faa510e17f3
Initial population of ttml11 subtree (part deux).
ttml11/old/dfxp/.cvsignore
ttml11/old/dfxp/.htaccess
ttml11/old/dfxp/Overview.html
ttml11/old/dfxp/Overview.xml
ttml11/old/dfxp/archive/.cvsignore
ttml11/old/dfxp/archive/CR-ttaf1-dfxp-20060207.zip
ttml11/old/dfxp/archive/CR-ttaf1-dfxp-20061001.zip
ttml11/old/dfxp/archive/CR-ttaf1-dfxp-20061110.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20041026.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20041101.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20050209.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20050222.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20050309.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20050321.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-200510DD-0.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-200510DD-1.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-200601DD-0.zip
ttml11/old/dfxp/archive/WD-ttaf1-dfxp-20060427.zip
ttml11/old/dfxp/archive/ttaf1-dfxp-tests-20060517.zip
ttml11/old/dfxp/dfxp.xpr
ttml11/old/dfxp/examples/.cvsignore
ttml11/old/dfxp/examples/doesc.bat
ttml11/old/dfxp/examples/ex1-p-0.xml
ttml11/old/dfxp/examples/ex1-x-0.xml
ttml11/old/dfxp/examples/ex1-x-1.xml
ttml11/old/dfxp/examples/ex1-x-2.xml
ttml11/old/dfxp/examples/ex1.xml
ttml11/old/dfxp/images/backgroundColor.png
ttml11/old/dfxp/images/color.png
ttml11/old/dfxp/images/direction.png
ttml11/old/dfxp/images/displayAlign.png
ttml11/old/dfxp/images/display_0.png
ttml11/old/dfxp/images/display_1.png
ttml11/old/dfxp/images/display_2.png
ttml11/old/dfxp/images/display_3.png
ttml11/old/dfxp/images/display_4.png
ttml11/old/dfxp/images/dk.png
ttml11/old/dfxp/images/ds.png
ttml11/old/dfxp/images/dynamicFlow_RU_animated.svg
ttml11/old/dfxp/images/dynamicFlow_snake_0.png
ttml11/old/dfxp/images/dynamicFlow_snake_1.png
ttml11/old/dfxp/images/dynamicFlow_snake_10.png
ttml11/old/dfxp/images/dynamicFlow_snake_11.png
ttml11/old/dfxp/images/dynamicFlow_snake_12.png
ttml11/old/dfxp/images/dynamicFlow_snake_13.png
ttml11/old/dfxp/images/dynamicFlow_snake_14.png
ttml11/old/dfxp/images/dynamicFlow_snake_15.png
ttml11/old/dfxp/images/dynamicFlow_snake_2.png
ttml11/old/dfxp/images/dynamicFlow_snake_3.png
ttml11/old/dfxp/images/dynamicFlow_snake_4.png
ttml11/old/dfxp/images/dynamicFlow_snake_5.png
ttml11/old/dfxp/images/dynamicFlow_snake_6.png
ttml11/old/dfxp/images/dynamicFlow_snake_7.png
ttml11/old/dfxp/images/dynamicFlow_snake_8.png
ttml11/old/dfxp/images/dynamicFlow_snake_9.png
ttml11/old/dfxp/images/eh.png
ttml11/old/dfxp/images/extent.png
ttml11/old/dfxp/images/fontFamily.png
ttml11/old/dfxp/images/fontSize.png
ttml11/old/dfxp/images/fontStyle.png
ttml11/old/dfxp/images/fontWeight.png
ttml11/old/dfxp/images/ga.png
ttml11/old/dfxp/images/gf.png
ttml11/old/dfxp/images/lineHeight.png
ttml11/old/dfxp/images/md.png
ttml11/old/dfxp/images/model.png
ttml11/old/dfxp/images/opacity_0.png
ttml11/old/dfxp/images/opacity_1.png
ttml11/old/dfxp/images/opacity_2.png
ttml11/old/dfxp/images/opacity_3.png
ttml11/old/dfxp/images/opacity_4.png
ttml11/old/dfxp/images/origin.png
ttml11/old/dfxp/images/overflow.png
ttml11/old/dfxp/images/padding.png
ttml11/old/dfxp/images/sh.png
ttml11/old/dfxp/images/streaming.png
ttml11/old/dfxp/images/subtitle1.png
ttml11/old/dfxp/images/subtitle2.png
ttml11/old/dfxp/images/subtitle3.png
ttml11/old/dfxp/images/subtitle4.png
ttml11/old/dfxp/images/subtitle5.png
ttml11/old/dfxp/images/subtitle6.png
ttml11/old/dfxp/images/subtitle7.png
ttml11/old/dfxp/images/subtitle8.png
ttml11/old/dfxp/images/subtitle9.png
ttml11/old/dfxp/images/textAlign.png
ttml11/old/dfxp/images/textDecoration.png
ttml11/old/dfxp/images/textOutline.png
ttml11/old/dfxp/images/tm.png
ttml11/old/dfxp/images/unicodeBidi.png
ttml11/old/dfxp/images/visibility_0.png
ttml11/old/dfxp/images/visibility_1.png
ttml11/old/dfxp/images/visibility_2.png
ttml11/old/dfxp/images/visibility_3.png
ttml11/old/dfxp/images/wrapOption.png
ttml11/old/dfxp/images/writingMode.png
ttml11/old/dfxp/images/zIndex.png
ttml11/old/dfxp/implementations/Implementation-XFSI-DFXPViewer.xls
ttml11/old/dfxp/implementations/ImplementationTemplate.xls
ttml11/old/dfxp/rnc/.cvsignore
ttml11/old/dfxp/rnc/doesc.bat
ttml11/old/dfxp/rnc/jvp.bat
ttml11/old/dfxp/rnc/schema.zip
ttml11/old/dfxp/rnc/ttaf1-dfxp-animation.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-classes.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-content.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-core-attribs.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-datatypes.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-document.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-head.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-layout.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-metadata-attribs.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-metadata-items.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-metadata.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-parameter-attribs.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-styling-attribs.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-styling.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp-timing-attribs.rnc
ttml11/old/dfxp/rnc/ttaf1-dfxp.rnc
ttml11/old/dfxp/samples/1.2-Body.xml
ttml11/old/dfxp/samples/1.2-Layout.xml
ttml11/old/dfxp/samples/1.2-Metadata.xml
ttml11/old/dfxp/samples/1.2-Styling.xml
ttml11/old/dfxp/samples/8.2.10-fontSize.xml
ttml11/old/dfxp/samples/8.2.11-fontStyle.xml
ttml11/old/dfxp/samples/8.2.12-fontWeight.xml
ttml11/old/dfxp/samples/8.2.13-lineHeight.xml
ttml11/old/dfxp/samples/8.2.14-Opacity.xml
ttml11/old/dfxp/samples/8.2.15-Origin.xml
ttml11/old/dfxp/samples/8.2.16-Overflow.xml
ttml11/old/dfxp/samples/8.2.17-Padding.xml
ttml11/old/dfxp/samples/8.2.18-showBackground.xml
ttml11/old/dfxp/samples/8.2.19-textAlign.xml
ttml11/old/dfxp/samples/8.2.2-Background-Color.xml
ttml11/old/dfxp/samples/8.2.20-textOutline.xml
ttml11/old/dfxp/samples/8.2.21-unicodeBidi.xml
ttml11/old/dfxp/samples/8.2.22-Visibility.xml
ttml11/old/dfxp/samples/8.2.23-wrapOption.xml
ttml11/old/dfxp/samples/8.2.24-writingMode.xml
ttml11/old/dfxp/samples/8.2.25-zIndex.xml
ttml11/old/dfxp/samples/8.2.3-Color.xml
ttml11/old/dfxp/samples/8.2.4-Direction.xml
ttml11/old/dfxp/samples/8.2.5-Display.xml
ttml11/old/dfxp/samples/8.2.6-displayAlign.xml
ttml11/old/dfxp/samples/8.2.7-dynamicFlow.xml
ttml11/old/dfxp/samples/8.2.8-Extent.xml
ttml11/old/dfxp/samples/8.2.9-fontFamily.xml
ttml11/old/dfxp/samples/8.4-Style.xml
ttml11/old/dfxp/samples/9.3.3-Intermediate-01.xml
ttml11/old/dfxp/samples/9.3.3-Intermediate-12.xml
ttml11/old/dfxp/samples/9.3.3-Intermediate-23.xml
ttml11/old/dfxp/samples/9.3.3-Source.xml
ttml11/old/dfxp/samples/ttaf1-dfxp-samples-20060518.zip
ttml11/old/dfxp/scm/adi.scm
ttml11/old/dfxp/scm/clean.bat
ttml11/old/dfxp/scm/clean.sh
ttml11/old/dfxp/scm/code.zip
ttml11/old/dfxp/scm/compile.scm
ttml11/old/dfxp/scm/dfxp.pkg
ttml11/old/dfxp/scm/doesc.bat
ttml11/old/dfxp/scm/dtf.scm
ttml11/old/dfxp/scm/fox.scm
ttml11/old/dfxp/scm/load.scm
ttml11/old/dfxp/scm/loadscm.scm
ttml11/old/dfxp/scm/notes.txt
ttml11/old/dfxp/scm/otm.c
ttml11/old/dfxp/scm/otm.exe
ttml11/old/dfxp/scm/otm.obj
ttml11/old/dfxp/scm/rxi.scm
ttml11/old/dfxp/scm/test.scm
ttml11/old/dfxp/scm/test.xml
ttml11/old/dfxp/scm/tir.scm
ttml11/old/dfxp/scm/util.scm
ttml11/old/dfxp/scm/win32-ext.scm
ttml11/old/dfxp/tests/aDisplay001.xml
ttml11/old/dfxp/tests/dfxp-test-suite-20070421.zip
ttml11/old/dfxp/tests/filelist.txt
ttml11/old/dfxp/tests/sBackgroundColor001.png
ttml11/old/dfxp/tests/sBackgroundColor001.xml
ttml11/old/dfxp/tests/sColor001.png
ttml11/old/dfxp/tests/sColor001.xml
ttml11/old/dfxp/tests/sColor002.png
ttml11/old/dfxp/tests/sColor002.xml
ttml11/old/dfxp/tests/sColor003.png
ttml11/old/dfxp/tests/sColor003.xml
ttml11/old/dfxp/tests/sDisplay001.png
ttml11/old/dfxp/tests/sDisplay001.xml
ttml11/old/dfxp/tests/sDisplay002.png
ttml11/old/dfxp/tests/sDisplay002.xml
ttml11/old/dfxp/tests/sDisplay003.png
ttml11/old/dfxp/tests/sDisplay003.xml
ttml11/old/dfxp/tests/sDisplay004.png
ttml11/old/dfxp/tests/sDisplay004.xml
ttml11/old/dfxp/tests/sDisplay005.png
ttml11/old/dfxp/tests/sDisplay005.xml
ttml11/old/dfxp/tests/sDisplayAlign001.png
ttml11/old/dfxp/tests/sDisplayAlign001.xml
ttml11/old/dfxp/tests/sDynamicFlow001.xml
ttml11/old/dfxp/tests/sExtent001.png
ttml11/old/dfxp/tests/sExtent001.xml
ttml11/old/dfxp/tests/sFontFamily001.png
ttml11/old/dfxp/tests/sFontFamily001.xml
ttml11/old/dfxp/tests/sFontFamily002.png
ttml11/old/dfxp/tests/sFontFamily002.xml
ttml11/old/dfxp/tests/sFontSize001.png
ttml11/old/dfxp/tests/sFontSize001.xml
ttml11/old/dfxp/tests/sFontStyle001.png
ttml11/old/dfxp/tests/sFontStyle001.xml
ttml11/old/dfxp/tests/sFontWeight001.png
ttml11/old/dfxp/tests/sFontWeight001.xml
ttml11/old/dfxp/tests/sLineHeight001.png
ttml11/old/dfxp/tests/sLineHeight001.xml
ttml11/old/dfxp/tests/sOpacity001.png
ttml11/old/dfxp/tests/sOpacity001.xml
ttml11/old/dfxp/tests/sOrigin001.png
ttml11/old/dfxp/tests/sOrigin001.xml
ttml11/old/dfxp/tests/sOverflow001.png
ttml11/old/dfxp/tests/sOverflow001.xml
ttml11/old/dfxp/tests/sPadding001.png
ttml11/old/dfxp/tests/sPadding001.xml
ttml11/old/dfxp/tests/sShowBackground001.png
ttml11/old/dfxp/tests/sShowBackground001.xml
ttml11/old/dfxp/tests/sTextAlign001.png
ttml11/old/dfxp/tests/sTextAlign001.xml
ttml11/old/dfxp/tests/sTextDecoration001.png
ttml11/old/dfxp/tests/sTextDecoration001.xml
ttml11/old/dfxp/tests/sTextOutline001.xml
ttml11/old/dfxp/tests/sUnicodeBidi001.xml
ttml11/old/dfxp/tests/sVisibility001.png
ttml11/old/dfxp/tests/sVisibility001.xml
ttml11/old/dfxp/tests/sWrapOption001.png
ttml11/old/dfxp/tests/sWrapOption001.xml
ttml11/old/dfxp/tests/sWritingMode001.png
ttml11/old/dfxp/tests/sWritingMode001.xml
ttml11/old/dfxp/tests/sWritingMode002.png
ttml11/old/dfxp/tests/sWritingMode002.xml
ttml11/old/dfxp/tests/sWritingMode003-0s.png
ttml11/old/dfxp/tests/sWritingMode003-1s.png
ttml11/old/dfxp/tests/sWritingMode003.xml
ttml11/old/dfxp/tests/sZIndex001.png
ttml11/old/dfxp/tests/sZIndex001.xml
ttml11/old/dfxp/tests/test.xls
ttml11/old/dfxp/todo.txt
ttml11/old/dfxp/ttaf1
ttml11/old/dfxp/ttaf1-dfxp.xsl
ttml11/old/dfxp/xmlspec-tt-f.dtd
ttml11/old/dfxp/xmlspec.xsl
ttml11/old/dfxp/xsd/.cvsignore
ttml11/old/dfxp/xsd/doesc.bat
ttml11/old/dfxp/xsd/schema.zip
ttml11/old/dfxp/xsd/ttaf1-dfxp-animation.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-content.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-core-attribs.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-datatypes.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-document.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-head.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-layout.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-metadata-attribs.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-metadata-items.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-metadata.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-parameter-attribs.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-schema-20060730.zip
ttml11/old/dfxp/xsd/ttaf1-dfxp-styling-attribs.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-styling.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp-timing-attribs.xsd
ttml11/old/dfxp/xsd/ttaf1-dfxp.xsd
ttml11/old/dfxp/xsd/ttaf1-dxfp-schema-20060627.zip
ttml11/old/dfxp/xsd/xml.xsd
ttml11/old/req/.htaccess
ttml11/old/req/Overview.html
ttml11/old/req/Overview.xml
ttml11/old/req/archives/NOTE-ttaf1-req-20060427.zip
ttml11/old/req/images/model.png
ttml11/old/req/images/model.vsd
ttml11/old/req/ttaf1-req.spp
ttml11/old/req/ttaf1-req.xsl
ttml11/old/req/xmlspec-local.mod
ttml11/old/req/xmlspec-post-entity.mod
ttml11/old/req/xmlspec-pre-entity.mod
ttml11/old/req/xmlspec-tt-f.dtd
ttml11/old/req/xmlspec-tt.dtd
ttml11/old/req/xmlspec.xsl
ttml11/spec/ackcurrent.xml
ttml11/spec/acknowledgements-current.txt
ttml11/spec/acknowledgements-old.txt
ttml11/spec/acknowledgements.xml
ttml11/spec/ackold.xml
ttml11/spec/build.xml
ttml11/spec/changelog.xml
ttml11/spec/changelog.xsl
ttml11/spec/diffmk.jar
ttml11/spec/diffspec.xsl
ttml11/spec/editlist.txt
ttml11/spec/entities.dtd
ttml11/spec/entitiescr.dtd
ttml11/spec/entitiesedcopy.dtd
ttml11/spec/entitieswd.dtd
ttml11/spec/escape.sed
ttml11/spec/examples/.cvsignore
ttml11/spec/examples/ex1-p-0.xml
ttml11/spec/examples/ex1-x-0.xml
ttml11/spec/examples/ex1-x-1.xml
ttml11/spec/examples/ex1-x-2.xml
ttml11/spec/examples/ex1.xml
ttml11/spec/generate-acknowledgements.xsl
ttml11/spec/images/.cvsignore
ttml11/spec/images/backgroundColor.png
ttml11/spec/images/color.png
ttml11/spec/images/direction.png
ttml11/spec/images/displayAlign.png
ttml11/spec/images/display_0.png
ttml11/spec/images/display_1.png
ttml11/spec/images/display_2.png
ttml11/spec/images/display_3.png
ttml11/spec/images/display_4.png
ttml11/spec/images/dk.png
ttml11/spec/images/ds.png
ttml11/spec/images/dynamicFlow_RU_animated.svg
ttml11/spec/images/dynamicFlow_snake_0.png
ttml11/spec/images/dynamicFlow_snake_1.png
ttml11/spec/images/dynamicFlow_snake_10.png
ttml11/spec/images/dynamicFlow_snake_11.png
ttml11/spec/images/dynamicFlow_snake_12.png
ttml11/spec/images/dynamicFlow_snake_13.png
ttml11/spec/images/dynamicFlow_snake_14.png
ttml11/spec/images/dynamicFlow_snake_15.png
ttml11/spec/images/dynamicFlow_snake_2.png
ttml11/spec/images/dynamicFlow_snake_3.png
ttml11/spec/images/dynamicFlow_snake_4.png
ttml11/spec/images/dynamicFlow_snake_5.png
ttml11/spec/images/dynamicFlow_snake_6.png
ttml11/spec/images/dynamicFlow_snake_7.png
ttml11/spec/images/dynamicFlow_snake_8.png
ttml11/spec/images/dynamicFlow_snake_9.png
ttml11/spec/images/eh.png
ttml11/spec/images/extent.png
ttml11/spec/images/fontFamily.png
ttml11/spec/images/fontSize.png
ttml11/spec/images/fontStyle.png
ttml11/spec/images/fontWeight.png
ttml11/spec/images/ga.png
ttml11/spec/images/gf.png
ttml11/spec/images/lineHeight.png
ttml11/spec/images/md.png
ttml11/spec/images/model.png
ttml11/spec/images/opacity_0.png
ttml11/spec/images/opacity_1.png
ttml11/spec/images/opacity_2.png
ttml11/spec/images/opacity_3.png
ttml11/spec/images/opacity_4.png
ttml11/spec/images/origin.png
ttml11/spec/images/overflow.png
ttml11/spec/images/padding.png
ttml11/spec/images/sh.png
ttml11/spec/images/streaming.png
ttml11/spec/images/subtitle1.png
ttml11/spec/images/subtitle2.png
ttml11/spec/images/subtitle3.png
ttml11/spec/images/subtitle4.png
ttml11/spec/images/subtitle5.png
ttml11/spec/images/subtitle6.png
ttml11/spec/images/subtitle7.png
ttml11/spec/images/subtitle8.png
ttml11/spec/images/subtitle9.png
ttml11/spec/images/textAlign.png
ttml11/spec/images/textDecoration.png
ttml11/spec/images/textOutline.png
ttml11/spec/images/timers.png
ttml11/spec/images/tm.png
ttml11/spec/images/unicodeBidi.png
ttml11/spec/images/visibility_0.png
ttml11/spec/images/visibility_1.png
ttml11/spec/images/visibility_2.png
ttml11/spec/images/visibility_3.png
ttml11/spec/images/wrapOption.png
ttml11/spec/images/writingMode.png
ttml11/spec/images/zIndex.png
ttml11/spec/jing/isorelax.jar
ttml11/spec/jing/jing.jar
ttml11/spec/jing/saxon.jar
ttml11/spec/jing/xercesImpl.jar
ttml11/spec/jing/xml-apis.jar
ttml11/spec/profiles/.cvsignore
ttml11/spec/profiles/dfxp-full.xml
ttml11/spec/profiles/dfxp-presentation.xml
ttml11/spec/profiles/dfxp-transformation.xml
ttml11/spec/rnc/.cvsignore
ttml11/spec/rnc/schema.zip
ttml11/spec/rnc/ttaf1-dfxp-animation.rnc
ttml11/spec/rnc/ttaf1-dfxp-classes.rnc
ttml11/spec/rnc/ttaf1-dfxp-content.rnc
ttml11/spec/rnc/ttaf1-dfxp-core-attribs.rnc
ttml11/spec/rnc/ttaf1-dfxp-datatypes.rnc
ttml11/spec/rnc/ttaf1-dfxp-document.rnc
ttml11/spec/rnc/ttaf1-dfxp-head.rnc
ttml11/spec/rnc/ttaf1-dfxp-layout.rnc
ttml11/spec/rnc/ttaf1-dfxp-metadata-attribs.rnc
ttml11/spec/rnc/ttaf1-dfxp-metadata-items.rnc
ttml11/spec/rnc/ttaf1-dfxp-metadata.rnc
ttml11/spec/rnc/ttaf1-dfxp-parameter-attribs.rnc
ttml11/spec/rnc/ttaf1-dfxp-parameter-items.rnc
ttml11/spec/rnc/ttaf1-dfxp-parameters.rnc
ttml11/spec/rnc/ttaf1-dfxp-styling-attribs.rnc
ttml11/spec/rnc/ttaf1-dfxp-styling.rnc
ttml11/spec/rnc/ttaf1-dfxp-timing-attribs.rnc
ttml11/spec/rnc/ttaf1-dfxp.rnc
ttml11/spec/saxon8/saxon8-ant.jar
ttml11/spec/saxon8/saxon8-dom.jar
ttml11/spec/saxon8/saxon8-dom4j.jar
ttml11/spec/saxon8/saxon8-jdom.jar
ttml11/spec/saxon8/saxon8-sql.jar
ttml11/spec/saxon8/saxon8-xom.jar
ttml11/spec/saxon8/saxon8-xpath.jar
ttml11/spec/saxon8/saxon8-xqj.jar
ttml11/spec/saxon8/saxon8.jar
ttml11/spec/scm/.cvsignore
ttml11/spec/scm/adi.scm
ttml11/spec/scm/compile.scm
ttml11/spec/scm/dfxp.pkg
ttml11/spec/scm/dtf.scm
ttml11/spec/scm/fox.scm
ttml11/spec/scm/load.scm
ttml11/spec/scm/rxi.scm
ttml11/spec/scm/test.xml
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+*.zip
+tidy.html
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+ForceType 'text/html; charset=UTF-8'
+</Files>
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ttml11/old/dfxp/Overview.html	Wed Apr 11 23:10:40 2012 -0600
@@ -0,0 +1,14743 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"
+    "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
+<html xml:lang="en" lang="en" xmlns="http://www.w3.org/1999/xhtml">
+  <head>
+    <meta http-equiv="Content-Type" content="application/xhtml+xml; charset=utf-8" />
+    <title>Timed Text (TT) Authoring Format 1.0&nbsp;– Distribution Format Exchange
+    Profile (DFXP)</title>
+    <style type="text/css">
+    /*<![CDATA[*/
+code           { font-family: monospace; }
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+                   border-bottom-color: #d3d3d3;
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+    href="http://www.w3.org/StyleSheets/TR/W3C-CR.css" />
+  </head>
+  <body>
+    <div class="head">
+      <p><a href="http://www.w3.org/"><img src="http://www.w3.org/Icons/w3c_home"
+      alt="W3C" height="48" width="72" /></a></p>
+      <h1><a name="title" id="title"></a>Timed Text (TT) Authoring Format 1.0&nbsp;–
+      Distribution Format Exchange Profile (DFXP)</h1>
+      <h2><a name="w3c-doctype" id="w3c-doctype"></a>W3C Candidate Recommendation 10
+      November 2006</h2>
+      <dl>
+        <dt>This version:</dt>
+        <dd><a
+        href="http://www.w3.org/TR/2006/CR-ttaf1-dfxp-20061110/">http://www.w3.org/TR/2006/CR-ttaf1-dfxp-20061110/</a></dd>
+        <dt>Latest version:</dt>
+        <dd><a
+        href="http://www.w3.org/TR/ttaf1-dfxp/">http://www.w3.org/TR/ttaf1-dfxp/</a></dd>
+        <dt>Previous version:</dt>
+        <dd><a
+        href="http://www.w3.org/TR/2006/WD-ttaf1-dfxp-20060427/">http://www.w3.org/TR/2006/WD-ttaf1-dfxp-20060427/</a></dd>
+        <dt>Editor:</dt>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Glenn Adams, Extensible Formatting Systems, Inc. (XFSI)</td>
+              <td><img src="images/ga.png" alt="glenn at x f s i dot com" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dt>Contributing Authors:</dt>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Mike Dolan, Invited Expert</td>
+              <td><img src="images/md.png" alt="m dolan at new t b t dot com" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Geoff Freed, WGBH National Center for Accessible Media</td>
+              <td><img src="images/gf.png"
+              alt="geoff underbar freed at w g b h dot org" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Sean Hayes, Microsoft</td>
+              <td><img src="images/sh.png"
+              alt="sean dot hayes at microsoft dot com" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Erik Hodge, RealNetworks</td>
+              <td><img src="images/eh.png" alt="e hodge at real dot com" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>David Kirby, British Broadcasting Corporation (BBC)</td>
+              <td><img src="images/dk.png"
+              alt="david dot kirby at r d dot b b c dot c o dot u k" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Thierry Michel, W3C</td>
+              <td><img src="images/tm.png" alt="t michel at w 3 dot org" /></td>
+            </tr>
+          </table>
+        </dd>
+        <dd>
+          <table style="margin: 0em 0em">
+            <tr>
+              <td>Dave Singer, Apple Computer</td>
+              <td><img src="images/ds.png" alt="singer at apple dot com" /></td>
+            </tr>
+          </table>
+        </dd>
+      </dl>
+<p class="copyright"><a href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright">Copyright</a> &copy; 2006 <a href="http://www.w3.org/"><acronym title="World Wide Web Consortium">W3C</acronym></a><sup>&reg;</sup> (<a href="http://www.csail.mit.edu/"><acronym title="Massachusetts Institute of Technology">MIT</acronym></a>, <a href="http://www.ercim.org/"><acronym title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>, <a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>, <a href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a> and <a href="http://www.w3.org/Consortium/Legal/copyright-documents">document use</a> rules apply.</p>
+    </div>
+    <hr />
+    <div>
+      <h2><a name="abstract" id="abstract"></a>Abstract</h2>
+      <p>This document specifies the distribution format exchange profile (DFXP) of the
+      timed text authoring format (TT AF) in terms of a vocabulary and semantics
+      thereof.</p>
+      <p>The timed text authoring format is a content type that represents timed text
+      media for the purpose of interchange among authoring systems. Timed text is textual
+      information that is intrinsically or extrinsically associated with timing
+      information.</p>
+      <p>The Distribution Format Exchange Profile is intended to be used for the purpose
+      of transcoding or exchanging timed text information among legacy distribution
+      content formats presently in use for subtitling and captioning functions.</p>
+      <p>In addition to being used for interchange among legacy distribution content
+      formats, DFXP content may be used directly as a distribution format, for example,
+      providing a standard content format to reference from a <code>&lt;text&gt;</code>
+      or <code>&lt;textstream&gt;</code> media object element in a <a
+      href="#smil21">[SMIL 2.1]</a> document.</p>
+    </div>
+    <div>
+      <h2><a name="status" id="status"></a>Status of this Document</h2>
+      <p><em>This section describes the status of this document at the time of its
+      publication. Other documents may supersede this document. A list of current W3C
+      publications and the latest revision of this technical report can be found in the
+      <a href="http://www.w3.org/TR/">W3C technical reports index</a> at
+      http://www.w3.org/TR/.</em></p>
+      <p>This is the 10&nbsp;November&nbsp;2006 Candidate Recommendation of the Timed Text
+      (TT) Authoring Format 1.0&nbsp;– Distribution Format Exchange Profile (DFXP). W3C
+      publishes a Candidate Recommendation to indicate that the document is believed to
+      be stable and to encourage implementation by the developer community. The <a
+      href="http://www.w3.org/AudioVideo/TT/">Timed Text (TT) Working Group</a> expects
+      to request that the Director advance this document to Proposed Recommendation once
+      the Working Group has, for each test in the <a
+      href="http://www.w3.org/2006/DFXP/testsuite/Overview.html">DFXP
+	  1.0 Test Suite</a>,
+      demonstrated support by two interoperable implementations. The Working
+      Group, working closely with the developer community, expects to show these
+      implementations by 01 March 2007. This estimate is based in part on the preliminary
+      <a href="http://www.w3.org/2006/DFXP/DFXP-implementation-result.html">DFXP
+      Interoperability Implementation Report</a>. The Working Group does not plan to
+      request to advance to Proposed Recommendation prior to 01 April 2007.</p>
+      <p>This is a W3C Candidate Recommendation. The second Last Call Working Draft for
+      this specification resulted in a number of Last Call comments which have all been
+      addressed by the working group; a list of all Last Call comments can be found in
+      the <a href="http://www.w3.org/2005/03/21/DFXP-2ND-LastCallResponses.html">Second
+      Last Call Comments List</a>. The list of changes made since the last public Working
+      Draft is available in <a href="#change-history-lc2-to-cr"><b>M.2 Changes from
+      Second Last Call Working Draft to Candidate Recommendation</b></a>.</p>
+	  <p>During the first Last Call period of this specification, there were <a
+	  href="http://lists.w3.org/Archives/Public/public-tt/2005Apr/0040.html">unsatisfied
+	  comments</a> that the working group was unable to resolve in a manner that satisfied
+	  the commenter(s). The status of these comments has not changed during the second
+	  Last Call period, as the working group continues to stand by its <a
+	  href="http://lists.w3.org/Archives/Public/public-tt/2005Oct/0000.html">original
+	  responses</a>. See also the <a
+	  href="http://www.w3.org/2005/03/21/DFXPLastCallResponses.html#Issue11">First
+	  Last Call Disposition of Comments</a> for a complete discussion.</p>
+      <p>The <em>dynamic flow processing</em> feature, as specified by the <a
+      href="#style-attribute-dynamicFlow"><code>tts:dynamicFlow</code></a> styling
+      attribute vocabulary, see also <a href="#dynamicFlowModel"><b>B Dynamic Flow
+      Processing Model</b></a>, has been determined to be <a
+      href="http://www.w3.org/2005/10/Process-20051014/tr.html#at-risk-feature">at
+      risk</a>, and is expected to be given the greatest scrutiny in the implementation
+      report.</p>
+      <p>Comments on this document should be sent to the email list <a
+      href="mailto:public-tt@w3.org">public-tt@w3.org</a>, which is the public mailing
+      list of Timed Text Working Group (<a
+      href="http://lists.w3.org/Archives/Public/public-tt/">list archives</a>). To
+      subscribe, send an email to <a
+      href="mailto:public-tt-request@w3.org">public-tt-request@w3.org</a> with the word
+      <code>subscribe</code> in the subject line.</p>
+      <p>This document has been produced by the <a
+      href="http://www.w3.org/AudioVideo/TT/">Timed Text (TT) Working Group</a> as part
+      of the W3C <a href="http://www.w3.org/AudioVideo/Activity">Synchronized Multimedia
+      Activity</a>, following the procedures set out for the W3C <a
+      href="http://www.w3.org/Consortium/Process/">Process</a>. The authors of this
+      document are listed in the header of this document.</p>
+<p> This document is governed by the <a href="http://www.w3.org/TR/2002/NOTE-patent-practice-20020124">24 January 2002 CPP</a> as amended by the <a href="http://www.w3.org/2004/02/05-pp-transition">W3C Patent Policy Transition Procedure</a>. W3C maintains a <a rel="disclosure" href="http://www.w3.org/2003/01/Timed-text-Patent-statements.html">public list of any patent disclosures</a> made in connection with the deliverables of the group; that page also includes instructions for disclosing a patent. An individual who has actual knowledge of a patent which the individual believes contains <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#def-essential">Essential Claim(s)</a> must disclose the information in accordance with <a href="http://www.w3.org/Consortium/Patent-Policy-20040205/#sec-Disclosure">section 6 of the W3C Patent Policy</a>. </p>
+      <p>Publication as a Candidate Recommendation does not imply endorsement by the W3C
+      Membership. This is a draft document and may be updated, replaced or obsoleted by
+      other documents at any time. It is inappropriate to cite this document as other
+      than work in progress.</p>
+    </div>
+    <div class="toc">
+      <h2><a name="contents" id="contents"></a>Table of Contents</h2>
+      <p class="toc">1 <a href="#intro">Introduction</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;1.1 <a href="#model">System Model</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;1.2 <a href="#example">Document Example</a><br />
+      2 <a href="#definitions">Definitions</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;2.1 <a href="#acronyms">Acronyms</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;2.2 <a href="#terms">Terminology</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;2.3 <a href="#conventions">Documentation
+      Conventions</a><br />
+      3 <a href="#conformance">Conformance</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;3.1 <a href="#conformance-content">Content
+      Conformance</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;3.2 <a href="#conformance-processor">Processor
+      Conformance</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;3.3 <a href="#claims">Claims</a><br />
+      4 <a href="#doctypes">Document Types</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;4.1 <a href="#dfxp-content-doctype">DFXP Content</a><br />
+      5 <a href="#vocabulary">Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;5.1 <a href="#vocabulary-namespaces">Namespaces</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;5.2 <a href="#vocabulary-profiles">Profiles</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;5.3 <a href="#vocabulary-overview">Catalog</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.3.1 <a
+      href="#core-vocabulary-overview">Core Catalog</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5.3.2 <a
+      href="#extension-vocabulary-overview">Extension Catalog</a><br />
+      6 <a href="#parameters">Parameters</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;6.1 <a href="#parameters-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;6.2 <a href="#parameters-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.1 <a
+      href="#parameter-attribute-cellResolution">ttp:cellResolution</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.2 <a
+      href="#parameter-attribute-clockMode">ttp:clockMode</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.3 <a
+      href="#parameter-attribute-frameRate">ttp:frameRate</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.4 <a
+      href="#parameter-attribute-frameRateMultiplier">ttp:frameRateMultiplier</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.5 <a
+      href="#parameter-attribute-markerMode">ttp:markerMode</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.6 <a
+      href="#parameter-attribute-pixelAspectRatio">ttp:pixelAspectRatio</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.7 <a
+      href="#parameter-attribute-profile">ttp:profile</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.8 <a
+      href="#parameter-attribute-smpteMode">ttp:smpteMode</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.9 <a
+      href="#parameter-attribute-subFrameRate">ttp:subFrameRate</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.10 <a
+      href="#parameter-attribute-tickRate">ttp:tickRate</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6.2.11 <a
+      href="#parameter-attribute-timeBase">ttp:timeBase</a><br />
+      7 <a href="#content">Content</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;7.1 <a href="#content-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.1 <a
+      href="#document-structure-vocabulary-tt">tt</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.2 <a
+      href="#document-structure-vocabulary-head">head</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.3 <a
+      href="#document-structure-vocabulary-body">body</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.4 <a
+      href="#content-vocabulary-div">div</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.5 <a
+      href="#content-vocabulary-p">p</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.6 <a
+      href="#content-vocabulary-span">span</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.1.7 <a
+      href="#content-vocabulary-br">br</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;7.2 <a href="#content-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2.1 <a
+      href="#content-attribute-id">xml:id</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2.2 <a
+      href="#content-attribute-lang">xml:lang</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7.2.3 <a
+      href="#content-attribute-space">xml:space</a><br />
+      8 <a href="#styling">Styling</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;8.1 <a href="#styling-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.1.1 <a
+      href="#styling-vocabulary-styling">styling</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.1.2 <a
+      href="#styling-vocabulary-style">style</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;8.2 <a href="#styling-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.1 <a
+      href="#style-attribute-style">style</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.2 <a
+      href="#style-attribute-backgroundColor">tts:backgroundColor</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.3 <a
+      href="#style-attribute-color">tts:color</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.4 <a
+      href="#style-attribute-direction">tts:direction</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.5 <a
+      href="#style-attribute-display">tts:display</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.6 <a
+      href="#style-attribute-displayAlign">tts:displayAlign</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.7 <a
+      href="#style-attribute-dynamicFlow">tts:dynamicFlow</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.8 <a
+      href="#style-attribute-extent">tts:extent</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.9 <a
+      href="#style-attribute-fontFamily">tts:fontFamily</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.10 <a
+      href="#style-attribute-fontSize">tts:fontSize</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.11 <a
+      href="#style-attribute-fontStyle">tts:fontStyle</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.12 <a
+      href="#style-attribute-fontWeight">tts:fontWeight</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.13 <a
+      href="#style-attribute-lineHeight">tts:lineHeight</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.14 <a
+      href="#style-attribute-opacity">tts:opacity</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.15 <a
+      href="#style-attribute-origin">tts:origin</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.16 <a
+      href="#style-attribute-overflow">tts:overflow</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.17 <a
+      href="#style-attribute-padding">tts:padding</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.18 <a
+      href="#style-attribute-showBackground">tts:showBackground</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.19 <a
+      href="#style-attribute-textAlign">tts:textAlign</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.20 <a
+      href="#style-attribute-textDecoration">tts:textDecoration</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.21 <a
+      href="#style-attribute-textOutline">tts:textOutline</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.22 <a
+      href="#style-attribute-unicodeBidi">tts:unicodeBidi</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.23 <a
+      href="#style-attribute-visibility">tts:visibility</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.24 <a
+      href="#style-attribute-wrapOption">tts:wrapOption</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.25 <a
+      href="#style-attribute-writingMode">tts:writingMode</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.2.26 <a
+      href="#style-attribute-zIndex">tts:zIndex</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;8.3 <a href="#styling-style-value-expressions">Style Value
+      Expressions</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.1 <a
+      href="#style-value-alpha">&lt;alpha&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.2 <a
+      href="#style-value-color">&lt;color&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.3 <a
+      href="#style-value-digit">&lt;digit&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.4 <a
+      href="#style-value-duration">&lt;duration&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.5 <a
+      href="#style-value-familyName">&lt;familyName&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.6 <a
+      href="#style-value-genericFamilyName">&lt;genericFamilyName&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.7 <a
+      href="#style-value-flowFunction">&lt;flowFunction&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.8 <a
+      href="#style-value-flowIntervalFunction">&lt;flowIntervalFunction&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.9 <a
+      href="#style-value-hexDigit">&lt;hexDigit&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.10 <a
+      href="#style-value-integer">&lt;integer&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.11 <a
+      href="#style-value-length">&lt;length&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.12 <a
+      href="#style-value-namedColor">&lt;namedColor&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.13 <a
+      href="#style-value-quotedString">&lt;quotedString&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.3.14 <a
+      href="#style-value-string">&lt;string&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;8.4 <a href="#semantics-style-association">Style
+      Association</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.1 <a
+      href="#semantics-style-association-inline">Inline Styling</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.2 <a
+      href="#semantics-style-association-referential">Referential Styling</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.4.3 <a
+      href="#semantics-style-association-chained-referential">Chained Referential
+      Styling</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;8.5 <a href="#semantics-style-inheritance">Style
+      Inheritance</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5.1 <a
+      href="#semantics-style-inheritance-content">Content Style Inheritance</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8.5.2 <a
+      href="#semantics-style-inheritance-region">Region Style Inheritance</a><br />
+      9 <a href="#layout">Layout</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;9.1 <a href="#layout-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.1.1 <a
+      href="#layout-vocabulary-layout">layout</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.1.2 <a
+      href="#layout-vocabulary-region">region</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;9.2 <a href="#layout-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.2.1 <a
+      href="#layout-attribute-region">region</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;9.3 <a href="#semantics-region-layout">Region Layout and
+      Presentation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.3.1 <a
+      href="#semantics-region-layout-step-1">Synchronic Region Construction</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.3.2 <a
+      href="#semantics-region-layout-step-2">Synchronic Flow Processing</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;9.3.3 <a
+      href="#semantics-region-layout-example">Elaborated Example</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;9.4 <a href="#semantics-line-layout">Line Layout</a><br />
+      10 <a href="#timing">Timing</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;10.1 <a href="#timing-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;10.2 <a href="#timing-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.2.1 <a
+      href="#timing-attribute-begin">begin</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.2.2 <a
+      href="#timing-attribute-end">end</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.2.3 <a
+      href="#timing-attribute-dur">dur</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.2.4 <a
+      href="#timing-attribute-timeContainer">timeContainer</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;10.3 <a href="#timing-time-value-expressions">Time Value
+      Expressions</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;10.3.1 <a
+      href="#timing-value-timeExpression">&lt;timeExpression&gt;</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;10.4 <a href="#timing-time-intervals">Time
+      Intervals</a><br />
+      11 <a href="#animation">Animation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;11.1 <a href="#animation-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;11.1.1 <a
+      href="#animation-vocabulary-set">set</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;11.2 <a href="#animation-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      12 <a href="#metadata">Metadata</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;12.1 <a href="#metadata-element-vocabulary">Element
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.1 <a
+      href="#metadata-vocabulary-metadata">metadata</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.2 <a
+      href="#metadata-vocabulary-title">ttm:title</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.3 <a
+      href="#metadata-vocabulary-desc">ttm:desc</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.4 <a
+      href="#metadata-vocabulary-copyright">ttm:copyright</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.5 <a
+      href="#metadata-vocabulary-agent">ttm:agent</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.6 <a
+      href="#metadata-vocabulary-name">ttm:name</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.1.7 <a
+      href="#metadata-vocabulary-actor">ttm:actor</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;12.2 <a href="#metadata-attribute-vocabulary">Attribute
+      Vocabulary</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.2.1 <a
+      href="#metadata-attribute-agent">ttm:agent</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;12.2.2 <a
+      href="#metadata-attribute-role">ttm:role</a><br />
+      </p>
+      <h3><a name="appendices" id="appendices"></a>Appendices</h3>
+      <p class="toc">A <a href="#reduced-infoset">Reduced XML Infoset</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;A.1 <a href="#reduced-infoset-document">Document
+      Information Item</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;A.2 <a href="#reduced-infoset-element">Element Information
+      Item</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;A.3 <a href="#reduced-infoset-attribute">Attribute
+      Information Item</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;A.4 <a href="#reduced-infoset-character">Character
+      Information Item</a><br />
+      B <a href="#dynamicFlowModel">Dynamic Flow Processing Model</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;B.1 <a
+      href="#dynamicFlowIntroduction">Introduction</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;B.2 <a href="#dynamicFlowEvents">Flow Buffer</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;B.3 <a href="#dynamicFlowIntervalTimingCalculation">Flow
+      Interval Timing Calculation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.3.1 <a
+      href="#flowIntervalFillTiming">Computed Fill Timing Interval</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.3.2 <a
+      href="#flowIntervalClearTiming">Computed Clear Timing Interval</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;B.4 <a href="#dynamicFlowOperations">Flow
+      Operations</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.4.1 <a
+      href="#flowOperationFill">Fill Operation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.4.2 <a
+      href="#flowOperationReflow">Reflow Operation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.4.3 <a
+      href="#flowOperationClear">Clear Operation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;B.5 <a href="#dynamicFlowTimers">Flow Timers</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.5.1 <a href="#flowTimerFill">Fill
+      Timer</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;B.5.2 <a
+      href="#flowTimerClear">Clear Timer</a><br />
+      C <a href="#schemas">Schemas</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;C.1 <a href="#dfxp-schema-rnc">Relax NG Schema</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.1 <a
+      href="#rnc-dfxp-driver-schema">Driver</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2 <a
+      href="#rnc-dfxp-modules">Modules</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.1 <a
+      href="#rnc-dfxp-animation-module">Animation Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.2 <a
+      href="#rnc-dfxp-classes-module">Classes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.3 <a
+      href="#rnc-dfxp-content-module">Content Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.4 <a
+      href="#rnc-dfxp-core-attribs-module">Core Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.5 <a
+      href="#rnc-dfxp-datatypes-module">Data Types Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.6 <a
+      href="#rnc-dfxp-document-module">Document Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.7 <a
+      href="#rnc-dfxp-head-module">Header Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.8 <a
+      href="#rnc-dfxp-layout-module">Layout Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.9 <a
+      href="#rnc-dfxp-metdata-module">Metadata Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.10 <a
+      href="#rnc-dfxp-metdata-items-module">Metadata Items Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.11 <a
+      href="#rnc-dfxp-metadata-attribs-module">Metadata Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.12 <a
+      href="#rnc-dfxp-parameter-attribs-module">Parameter Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.13 <a
+      href="#rnc-dfxp-styling-attribs-module">Styling Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.14 <a
+      href="#rnc-dfxp-styling-module">Styling Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.1.2.15 <a
+      href="#rnc-dfxp-timing-attribs-module">Timing Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;C.2 <a href="#dfxp-schema-xsd">XML Schema Definition (XSD)
+      Schema</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.1 <a
+      href="#xsd-dfxp-driver-schema">Driver</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2 <a
+      href="#xsd-dfxp-modules">Modules</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.1 <a
+      href="#xsd-dfxp-animation-module">Animation Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.2 <a
+      href="#xsd-dfxp-content-module">Content Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.3 <a
+      href="#xsd-dfxp-core-attribs-module">Core Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.4 <a
+      href="#xsd-dfxp-datatypes-module">Data Types Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.5 <a
+      href="#xsd-dfxp-document-module">Document Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.6 <a
+      href="#xsd-dfxp-head-module">Header Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.7 <a
+      href="#xsd-dfxp-layout-module">Layout Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.8 <a
+      href="#xsd-dfxp-metdata-module">Metadata Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.9 <a
+      href="#xsd-dfxp-metdata-items-module">Metadata Items Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.10 <a
+      href="#xsd-dfxp-metadata-attribs-module">Metadata Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.11 <a
+      href="#xsd-dfxp-parameter-attribs-module">Parameter Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.12 <a
+      href="#xsd-dfxp-styling-attribs-module">Styling Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.13 <a
+      href="#xsd-dfxp-styling-module">Styling Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.14 <a
+      href="#xsd-dfxp-timing-attribs-module">Timing Attributes Module</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;C.2.2.15 <a
+      href="#xsd-dfxp-xml-attrs-module">XML Attributes Module</a><br />
+      D <a href="#media-type-registration">Media Type Registration</a><br />
+      E <a href="#references">References</a><br />
+      F <a href="#other-references">Other References</a> (Non-Normative)<br />
+      G <a href="#sample-code">Sample Code</a> (Non-Normative)<br />
+      &nbsp;&nbsp;&nbsp;&nbsp;G.1 <a href="#code-rxi">Reduced XML Infoset (RXI)
+      –&nbsp;RXI.SCM</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;G.2 <a href="#code-adi">Abstract Document Instance (ADI)
+      –&nbsp;ADI.SCM</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;G.3 <a href="#code-tir">Time Interval Resolver (TIR)
+      –&nbsp;TIR.SCM</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;G.4 <a href="#code-fox">Flow Object Transformer (FOX)
+      –&nbsp;FOX.SCM</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;G.5 <a href="#code-dtf">Dynamic Text Flow Processor (DTF)
+      –&nbsp;DTF.SCM</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;G.6 <a href="#code-run">Sample Compile, Load, and Run
+      Session</a><br />
+      H <a href="#requirements">Requirements</a> (Non-Normative)<br />
+      I <a href="#derivation">Vocabulary Derivation</a> (Non-Normative)<br />
+      &nbsp;&nbsp;&nbsp;&nbsp;I.1 <a href="#IDA4XGQ">Element Derivation</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;I.2 <a href="#IDA3IHQ">Attribute Derivation</a><br />
+      J <a href="#qa">QA Framework Compliance</a> (Non-Normative)<br />
+      &nbsp;&nbsp;&nbsp;&nbsp;J.1 <a href="#IDAZMIQ">Requirements</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;J.2 <a href="#IDA0WIQ">Guidelines</a><br />
+      K <a href="#streaming">Streaming DFXP Content</a> (Non-Normative)<br />
+      L <a href="#acknowledgements">Acknowledgments</a> (Non-Normative)<br />
+      M <a href="#change-history">Change History</a> (Non-Normative)<br />
+      &nbsp;&nbsp;&nbsp;&nbsp;M.1 <a href="#change-history-lc1-to-lc2">Changes from First
+      to Second Last Call Working Draft</a><br />
+      &nbsp;&nbsp;&nbsp;&nbsp;M.2 <a href="#change-history-lc2-to-cr">Changes from Second
+      Last Call Working Draft to Candidate Recommendation</a><br />
+      </p>
+    </div>
+    <hr />
+    <div class="body">
+      <div class="div1">
+        <h2><a name="intro" id="intro"></a>1 Introduction</h2>
+        <p><em>Unless specified otherwise, this section and its sub-sections are
+        non-normative.</em></p>
+        <p>The Timed Text Authoring Format (TT AF) Distribution Format Exchange Profile
+        (DFXP) provides a standardized representation of a particular subset of textual
+        information with which stylistic, layout, and timing semantics are associated by
+        an author or an authoring system for the purpose of interchange and potential
+        presentation.</p>
+        <p>DFXP is expressly designed to meet only a limited set of requirements
+        established by <a href="#ttaf1-req">[TTAF1-REQ]</a>, and summarized in <a
+        href="#requirements"><b>H Requirements</b></a>. In particular, only those
+        requirements which service the need of performing interchange with existing,
+        legacy distribution systems are satisfied.</p>
+        <p>In addition to being used for interchange among legacy distribution content
+        formats, DFXP content may be used directly as a distribution format, providing,
+        for example, a standard content format to reference from a
+        <code>&lt;text&gt;</code> or <code>&lt;textstream&gt;</code> media object element
+        in a <a href="#smil21">[SMIL 2.1]</a> document. Certain properties of DFXP
+        support streamability of content, as described in <a href="#streaming"><b>K
+        Streaming DFXP Content</b></a>.</p>
+        <div class="note">
+          <p class="prefix"><b>Note:</b></p>
+          <p>While DFXP was not expressly designed for direct (embedded) integration into
+          a SMIL document instance, such integration is not precluded.</p>
+        </div>
+        <div class="note">
+          <p class="prefix"><b>Note:</b></p>
+          <p>In some contexts of use, it may be appropriate to employ animated content to
+          depict sign language representations of the same content as expressed by a
+          Timed Text document instance. This use case is not explicitly addressed by DFXP
+          mechanisms, but may be addressed by some external multimedia integration
+          technology, such as SMIL.</p>
+        </div>
+        <div class="div2">
+          <h3><a name="model" id="model"></a>1.1 System Model</h3>
+          <p>Use of DFXP is intended to function in a wider context of Timed Text
+          Authoring and Distribution mechanisms that are based upon a system model,
+          depicted in <a href="#model-graphic"><b>Figure 1 – System Model</b></a>,
+          wherein the timed text authoring format serves as a bidirectional interchange
+          format among a heterogeneous collection of authoring systems, and as a
+          unidirectional interchange format to a heterogeneous collection of distribution
+          formats after undergoing transcoding or compilation to the target distribution
+          formats as required, and where one particular distribution format is DFXP.</p>
+          <table summary="HTML Table" id="model-graphic" class="example-images">
+            <caption>
+              Figure 1 – System Model
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/model.png"
+                alt="System Model" /></td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+        <div class="div2">
+          <h3><a name="example" id="example"></a>1.2 Document Example</h3>
+          <p>A DFXP document instance consists of a <code>tt</code> document element that
+          contains a header and a body, where the header specifies document level
+          metadata, styling definitions and layout definitions, and the body specifies
+          text content intermixed with references to style and layout information and
+          inline timing information.</p>
+          <table summary="HTML Table" id="dfxp-example-document-structure"
+          class="example">
+            <caption>
+              Example Fragment – DFXP Document Structure
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;tt xml:lang="" xmlns="http://www.w3.org/2006/10/ttaf1"&gt;
+  &lt;head&gt;
+    &lt;metadata/&gt;
+    &lt;styling/&gt;
+    &lt;layout/&gt;
+  &lt;/head&gt;
+  &lt;body/&gt;
+&lt;/tt&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p>Document level metadata may specify a document title, description, and
+          copyright information. In addition, arbitrary metadata drawn from other
+          namespaces may be specified.</p>
+          <table summary="HTML Table" id="dfxp-example-metadata" class="example">
+            <caption>
+              Example Fragment – DFXP Metadata
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;metadata xmlns:ttm="http://www.w3.org/2006/10/ttaf1#metadata"&gt;
+  &lt;ttm:title&gt;Timed Text DFXP Example&lt;/ttm:title&gt;
+  &lt;ttm:copyright&gt;The Authors (c) 2006&lt;/ttm:copyright&gt;
+&lt;/metadata&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p>Styling information may be specified in the form of style specification
+          definitions that are referenced by layout and content information.</p>
+          <p>In <a href="#dfxp-example-styling"><b>Example Fragment – DFXP
+          Styling</b></a>, four style sets of specifications are defined, with one set
+          serving as a collection of default styles.</p>
+          <table summary="HTML Table" id="dfxp-example-styling" class="example">
+            <caption>
+              Example Fragment – DFXP Styling
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;styling xmlns:tts="http://www.w3.org/2006/10/ttaf1#style"&gt;
+  &lt;!-- s1 specifies default color, font, and text alignment --&gt;
+  &lt;style xml:id="s1"
+    tts:color="white"
+    tts:fontFamily="proportionalSansSerif"
+    tts:fontSize="22px"
+    tts:textAlign="center"
+  /&gt;
+  &lt;!-- alternative using yellow text but otherwise the same as style s1 --&gt;
+  &lt;style xml:id="s2" style="s1" tts:color="yellow"/&gt;
+  &lt;!-- a style based on s1 but justified to the right --&gt;
+  &lt;style xml:id="s1Right" style="s1" tts:textAlign="end" /&gt;     
+  &lt;!-- a style based on s2 but justified to the left --&gt;
+  &lt;style xml:id="s2Left" style="s2" tts:textAlign="start" /&gt;
+&lt;/styling&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p>Layout information defines one or more regions into which content is
+          intended to be presented. A region definition may reference one or more sets of
+          style specifications in order to permit content flowed in the region to inherit
+          from these styles. In <a href="#dfxp-example-layout"><b>Example Fragment – DFXP
+          Layout</b></a>, the region definition makes reference to style specification
+          <code>s1</code> which allows all content flowed into the region to inherit from
+          the region's styles (in the case that a style is not already explicitly
+          specified on content or inherited via the content hierarchy.)</p>
+          <table summary="HTML Table" id="dfxp-example-layout" class="example">
+            <caption>
+              Example Fragment – DFXP Layout
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;layout xmlns:tts="http://www.w3.org/2006/10/ttaf1#style"&gt;
+  &lt;region xml:id="subtitleArea"
+    style="s1"
+    tts:extent="560px 62px"
+    tts:padding="5px 3px"
+    tts:backgroundColor="black"
+    tts:displayAlign="after"
+  /&gt;
+&lt;/layout&gt;  
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The content of a DFXP document instance is expressed in its body, which is
+          organized in terms of block and inline text elements. The hierarchical
+          organization of content elements serves a primary role in determining both
+          spatial and temporal relationships. For example, in <a
+          href="#dfxp-example-body"><b>Example Fragment – DFXP Body</b></a>, each
+          paragraph (<code>p</code> element) is flowed into its target region in the
+          specified lexical order; furthermore, the active time interval of each
+          paragraph is timed in accordance to its parent or sibling according to the
+          applicable time containment semantics — in this case, the division parent is
+          interpreted as a parallel time container.</p>
+          <table summary="HTML Table" id="dfxp-example-body" class="example">
+            <caption>
+              Example Fragment – DFXP Body
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;body region="subtitleArea"&gt;
+  &lt;div&gt;
+    &lt;p xml:id="subtitle1" begin="0.76s" end="3.45s"&gt;
+      It seems a paradox, does it not,
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle2" begin="5.0s" end="10.0s"&gt;
+      that the image formed on&lt;br/&gt;
+      the Retina should be inverted?
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle3" begin="10.0s" end="16.0s" style="s2"&gt;
+      It is puzzling, why is it&lt;br/&gt;
+      we do not see things upside-down?
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle4" begin="17.2s" end="23.0s"&gt;
+      You have never heard the Theory,&lt;br/&gt;
+      then, that the Brain also is inverted?
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle5" begin="23.0s" end="27.0s" style="s2"&gt;
+      No indeed! What a beautiful fact!
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle6a" begin="28.0s" end="34.6s" style="s2Left"&gt;
+      But how is it proved?
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle6b" begin="28.0s" end="34.6s" style="s1Right"&gt;
+      Thus: what we call
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle7" begin="34.6s" end="45.0s" style="s1Right"&gt;
+      the vertex of the Brain&lt;br/&gt;
+      is really its base
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle8" begin="45.0s" end="52.0s" style="s1Right"&gt;
+      and what we call its base&lt;br/&gt;
+      is really its vertex,
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle9a" begin="53.5s" end="58.7s"&gt;
+      it is simply a question of nomenclature.
+    &lt;/p&gt;
+    &lt;p xml:id="subtitle9b" begin="53.5s" end="58.7s" style="s2"&gt;
+      How truly delightful!
+    &lt;/p&gt;
+  &lt;/div&gt;    
+&lt;/body&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The first subtitle <a href="#dfxp-example-subtitle-1"><b>Subtitle 1 – Time
+          Interval [0.76, 3.45)</b></a> is presented during the time interval 0.76 to
+          3.45 seconds. In this example, the default metric for time expressions is
+          seconds since no metric is specified in the expressions. This subtitle inherits
+          its font family, font size, foreground color, and text alignment from the
+          region into which it is presented. Since no region is explicitly specified on
+          the paragraph, the nearest ancestor that specifies a region determines the
+          region. Note also that content is presented at the bottom (after edge) of the
+          containing region due to the <code>tts:displayAlign="after"</code> being
+          specified on the region definition.</p>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>The notation "[<em>X</em>,<em>Y</em>]" denotes a closed interval from
+            <em>X</em> to <em>Y</em>, including <em>X</em> and <em>Y</em>;
+            "[<em>X</em>,<em>Y</em>)" denotes a right half-open interval from <em>X</em>
+            to <em>Y</em>, including <em>X</em> but not including <em>Y</em>;
+            "(<em>X</em>,<em>Y</em>]" denotes a left half-open interval from <em>X</em>
+            to <em>Y</em>, not including <em>X</em> but including <em>Y</em>;
+            "(<em>X</em>,<em>Y</em>)" denotes an open interval from <em>X</em> to
+            <em>Y</em>, not including <em>X</em> or <em>Y</em>.</p>
+          </div>
+          <table summary="HTML Table" id="dfxp-example-subtitle-1"
+          class="example-images">
+            <caption>
+              Subtitle 1 – Time Interval [0.76, 3.45)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle1.png"
+                alt="Subtitle 1" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The second subtitle continues with the default style, except that it
+          contains two lines of text with an intervening author-specified line break.
+          Note the effects of the use of <code>tts:textAlign="center"</code> to specify
+          the paragraph's alignment in the inline progression direction.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-2"
+          class="example-images">
+            <caption>
+              Subtitle 2 – Time Interval [5.0, 10.0)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle2.png"
+                alt="Subtitle 2" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The third subtitle continues, using a variant style which overrides the
+          default style's foreground color with a different color.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-3"
+          class="example-images">
+            <caption>
+              Subtitle 3 – Time Interval [10.0, 16.0)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle3.png"
+                alt="Subtitle 3" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The fourth subtitle reverts to the default style.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-4"
+          class="example-images">
+            <caption>
+              Subtitle 4 – Time Interval [17.2, 23.0)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle4.png"
+                alt="Subtitle 4" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The fifth subtitle continues, again using a variant style which overrides
+          the default style's foreground color with a different color.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-5"
+          class="example-images">
+            <caption>
+              Subtitle 5 – Time Interval [23.0, 27.0)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle5.png"
+                alt="Subtitle 5" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>During the next active time interval, two distinct subtitles are
+          simultaneously active, with the paragraph expressing each subtitle using a
+          different style that overrides color and paragraph text alignment of the
+          default style. Note that the flow order is determined by the lexical order of
+          elements as they appear in the content hierarchy.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-6"
+          class="example-images">
+            <caption>
+              Subtitles 6a and 6b – Time Interval [28.0, 34.6)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle6.png"
+                alt="Subtitles 6a and 6b" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The next subtitle is specified in a similar manner using a style override to
+          give a paragraph right (end) justified in the inline progression direction.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-7"
+          class="example-images">
+            <caption>
+              Subtitle 7 – Time Interval [34.6, 45.0)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle7.png"
+                alt="Subtitles 7a and 7b" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The eighth subtitle uses the same style override as the previous subtitle in
+          order to maintain the right (end) justification of the paragraph.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-8"
+          class="example-images">
+            <caption>
+              Subtitle 8 – Time Interval [47.3, 49.0)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle8.png"
+                alt="Subtitle 8" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>During the final (ninth) active time interval, two distinct subtitles are
+          again simultaneously active, but with a different style applied to the second
+          paragraph to override the default color. Note that the flow order is determined
+          by the lexical order of elements as they appear in the content hierarchy.</p>
+          <table summary="HTML Table" id="dfxp-example-subtitle-9"
+          class="example-images">
+            <caption>
+              Subtitles 9a and 9b – Time Interval [53.5, 58.7)
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1"><img src="images/subtitle9.png"
+                alt="Subtitles 9a and 9b" /></td>
+              </tr>
+            </tbody>
+          </table>
+          <p>The examples shown above demonstrate the primary types of information that
+          may be authored using DFXP: metadata, styling, layout, timing, and content. In
+          typical cases, styling and layout information are separately specified in a
+          document instance. Content information is expressed in a hierarchical fashion
+          that embodies the organization of both spatial (flow) and timing information.
+          Content makes direct or indirect references to styling and layout information
+          and may specify inline overrides to styling.</p>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="definitions" id="definitions"></a>2 Definitions</h2>
+        <div class="div2">
+          <h3><a name="acronyms" id="acronyms"></a>2.1 Acronyms</h3>
+          <table class="acronyms" summary="Glossary List">
+            <tr>
+              <td class="label"><b>DFXP</b></td>
+              <td class="def">
+                <p>Distribution Format Exchange Profile</p>
+              </td>
+            </tr>
+            <tr>
+              <td class="label"><b>TT</b></td>
+              <td class="def">
+                <p>Timed Text</p>
+              </td>
+            </tr>
+            <tr>
+              <td class="label"><b>TT AS</b></td>
+              <td class="def">
+                <p>Timed Text Authoring System</p>
+              </td>
+            </tr>
+            <tr>
+              <td class="label"><b>TT AF</b></td>
+              <td class="def">
+                <p>Timed Text Authoring Format</p>
+              </td>
+            </tr>
+            <tr>
+              <td class="label"><b>TT WG</b></td>
+              <td class="def">
+                <p>Timed Text Working Group</p>
+              </td>
+            </tr>
+          </table>
+        </div>
+        <div class="div2">
+          <h3><a name="terms" id="terms"></a>2.2 Terminology</h3>
+          <dl>
+            <dt class="label">Abstract Document Instance</dt>
+            <dd>
+              <p>An instance of an abstract data set as represented by a <em>Reduced XML
+              Infoset</em>.</p>
+            </dd>
+            <dt class="label">Abstract Document Type</dt>
+            <dd>
+              <p>A set of constraints that defines a class of <em>XML Information
+              Set</em>s <a href="#infoset">[XML InfoSet]</a>.</p>
+            </dd>
+            <dt class="label">Attribute Information Item</dt>
+            <dd>
+              <p>Each specified or defaulted attribute of an XML document corresponds
+              with an attribute information item as defined by <a href="#infoset">[XML
+              InfoSet]</a>, §2.3.</p>
+            </dd>
+            <dt class="label">Character Information Item</dt>
+            <dd>
+              <p>Each data character appearing in an XML document corresponds with a
+              character information item as defined by <a href="#infoset">[XML
+              InfoSet]</a>, §2.6.</p>
+            </dd>
+            <dt class="label">Content Region</dt>
+            <dd>
+              <p>A logical region into which rendered content is placed when modeling or
+              performing presentation processing.</p>
+            </dd>
+            <dt class="label">Element Information Item</dt>
+            <dd>
+              <p>Each element appearing in an XML document corresponds with an element
+              information item as defined by <a href="#infoset">[XML InfoSet]</a>,
+              §2.2.</p>
+            </dd>
+            <dt class="label">Exchange Profile</dt>
+            <dd>
+              <p>A profile (subset) of the TT AF that serves a set of needs for content
+              exchange.</p>
+            </dd>
+            <dt class="label">Region</dt>
+            <dd>
+              <p>A logical construct that models authorial intention regarding desired or
+              potential presentation processing, and which is represented as a
+              rectangular area of a presentation surface into which content is composed
+              and rendered during presentation processing.</p>
+            </dd>
+            <dt class="label">Reduced XML Infoset</dt>
+            <dd>
+              <p>An XML Information Set <a href="#infoset">[XML InfoSet]</a> that
+              satisfieds the constraints specify by <a href="#reduced-infoset"><b>A
+              Reduced XML Infoset</b></a>.</p>
+            </dd>
+            <dt class="label">Root Container Region</dt>
+            <dd>
+              <p>A logical region that establishes a coordinate system into which content
+              regions are placed and optionally clipped.</p>
+            </dd>
+            <dt class="label">Timed Text</dt>
+            <dd>
+              <p>Textual information that is intrinsically or extrinsically associated
+              with timing information.</p>
+            </dd>
+            <dt class="label">Timed Text Authoring Format</dt>
+            <dd>
+              <p>A content type that represents timed text media for the purpose of
+              interchange among authoring systems.</p>
+            </dd>
+            <dt class="label">Timed Text Authoring System</dt>
+            <dd>
+              <p>A content authoring system capable of importing and exporting timed text
+              authoring format content.</p>
+            </dd>
+          </dl>
+        </div>
+        <div class="div2">
+          <h3><a name="conventions" id="conventions"></a>2.3 Documentation
+          Conventions</h3>
+          <p>Within normative prose in this specification, the words <em>may</em>,
+          <em>should</em>, and <em>must</em> are defined as follows:</p>
+          <dl class="conformance-keywords">
+            <dt class="label">may</dt>
+            <dd>
+              <p>Conforming documents and/or TT AF processors are permitted to, but need
+              not behave as described.</p>
+            </dd>
+            <dt class="label">should</dt>
+            <dd>
+              <p>Conforming documents and/or TT AF processors are strongly recommended
+              to, but need not behave as described.</p>
+            </dd>
+            <dt class="label">must</dt>
+            <dd>
+              <p>Conforming documents and/or TT AF processors are required to behave as
+              described; otherwise, they are in error.</p>
+            </dd>
+          </dl>
+          <p>All normative syntactic definitions of XML representations and other related
+          terms are depicted with a light orange background color and labeled as "XML
+          Representation" or "Syntax Representation", such as in the following:</p>
+          <table summary="HTML Table" id="elt-syntax-example" class="syntax">
+            <caption>
+              XML Representation – Element Information Item: example
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;example
+  <span class="reqattr">count</span> = integer
+  size = (<em>large</em>|<em>medium</em>|<em>small</em>) : medium&gt;
+  <em>Content:</em> (all | any*)
+&lt;/example&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <p>In an XML representation, bold-face attribute names (e.g. <span
+          class="strong">count</span> above) indicate a required attribute information
+          item, and the rest are optional. Where an attribute information item has an
+          enumerated type definition, the values are shown separated by vertical bars, as
+          for <code>size</code> above; if there is a default value, it is shown following
+          a colon. Where an attribute information item has a built-in simple type
+          definition defined in <a href="#xsd-2">[XML Schema Part 2]</a>, a hyperlink to
+          its definition therein is given.</p>
+          <p>The allowed content of the information item is shown as a grammar fragment,
+          using the Kleene operators <code>?</code>, <code>*</code> and <code>+</code>.
+          Each element name therein is a hyperlink to its own illustration.</p>
+          <p>All content of this specification that is not explicitly marked as
+          non-normative is considered to be normative. If a section or appendix header
+          contains the the expression "Non-Normative", then the entirety of the section
+          or appendix is considered non-normative.</p>
+          <p>All paragraphs marked as a <span class="strong">Note</span> are considered
+          non-normative.</p>
+          <p>Example code fragments are depicted with a light blue-green background color
+          and labeled as "Example Fragment", such as in the following:</p>
+          <table summary="HTML Table" id="example-fragment-1" class="example">
+            <caption>
+              Example Fragment – Sample
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;tt xml:lang="" xmlns="http://www.w3.org/2006/10/ttaf1"&gt;
+  &lt;head&gt;
+    &lt;metadata/&gt;
+    &lt;styling/&gt;
+    &lt;layout/&gt;
+  &lt;/head&gt;
+  &lt;body/&gt;
+&lt;/tt&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="conformance" id="conformance"></a>3 Conformance</h2>
+        <p>This section specifies the general conformance requirements for TT AF content
+        and processors.</p>
+        <div class="div2">
+          <h3><a name="conformance-content" id="conformance-content"></a>3.1 Content
+          Conformance</h3>
+          <p>A TT AF document instance conforms to this specification if the following
+          criteria are satisfied:</p>
+          <ol type="1">
+            <li>
+              <p>When transporting a document instance in a context in which a MIME Media
+              Type <a href="#mime-media">[MIME]</a> identifies the content type of the
+              interchanged document instance, then the specified media type is
+              <code>application/ttaf+xml</code> in conformance with <a
+              href="#rfc3023">[XML Media Types]</a> § 7, with which an optional
+              <code>profile</code> parameter may appear, the value of which conforms to
+              the values defined by <a href="#vocabulary-profiles"><b>5.2
+              Profiles</b></a>.</p>
+            </li>
+            <li>
+              <p>The document instance is or can be represented as a Reduced XML Infoset
+              as defined by <a href="#reduced-infoset"><b>A Reduced XML
+              Infoset</b></a>.</p>
+            </li>
+            <li>
+              <p>The Reduced XML Infoset that corresponds to the document instance is or
+              can be associated with one of the TT AF Abstract Document Types defined by
+              <a href="#doctypes"><b>4 Document Types</b></a>.</p>
+            </li>
+            <li>
+              <p>The Reduced XML Infoset that corresponds to the document instance is a
+              Valid Abstract Document Instance of the associated Abstract Document
+              Type.</p>
+            </li>
+            <li>
+              <p>The Reduced XML Infoset satisfies all additional mandatory syntactic and
+              semantic constraints defined by this specification. In addition, this
+              Infoset should satisfy the web content accessibility guidelines specified
+              by <a href="#wcag">[WCAG]</a>.</p>
+            </li>
+          </ol>
+        </div>
+        <div class="div2">
+          <h3><a name="conformance-processor" id="conformance-processor"></a>3.2
+          Processor Conformance</h3>
+          <p>A TT AF processor conforms to this specification if the following criteria
+          are satisfied:</p>
+          <ol type="1">
+            <li>
+              <p>The processor provides at least one mechanism for notionally
+              instantiating a Reduced XML Infoset representation of a conformant TT AF
+              document instance.</p>
+            </li>
+            <li>
+              <p>If a process does or can perform validation of a candidate TT AF
+              document instance, then it provides at least one mechanism to implicitly or
+              explicitly associate the Reduced XML Infoset representation of a conformant
+              TT AF document instance with one of the TT AF Abstract Document Types
+              defined by <a href="#doctypes"><b>4 Document Types</b></a>.</p>
+            </li>
+            <li>
+              <p>The processor does not <em>a priori</em> reject or abort the processing
+              of a conformant TT AF document instance.</p>
+            </li>
+            <li>
+              <p>The processor supports all mandatory processing semantics defined by
+              this specification.</p>
+            </li>
+            <li>
+              <p>If the processor claims to support presentation processing in order to
+              produce a rendition of TT AF content on a visual medium, then it must
+              implement the region and line layout semantics defined by <a
+              href="#semantics-region-layout"><b>9.3 Region Layout and
+              Presentation</b></a> and <a href="#semantics-line-layout"><b>9.4 Line
+              Layout</b></a>, respectively. In addition, the processor should satisfy the
+              user agent accessibility guidelines specified by <a
+              href="#uaag">[UAAG]</a>.</p>
+            </li>
+            <li>
+              <p>If the processor supports some optional processing semantics defined by
+              this specification, then it does so in a manner consistent with the defined
+              semantics.</p>
+            </li>
+          </ol>
+        </div>
+        <div class="div2">
+          <h3><a name="claims" id="claims"></a>3.3 Claims</h3>
+          <p>Any claim of compliance with respect to TT AF content or processor
+          conformance must make reference to an implementation compliance statement
+          (ICS).</p>
+          <p>An implementation compliance statement must identify all mandatory and
+          optional features of this specification that are satisfied by the content or
+          processor implementation. In particular, the statement must identify the
+          utilized or supported TT AF vocabulary profile(s) as defined by <a
+          href="#vocabulary-profiles"><b>5.2 Profiles</b></a>, and, if a subset or
+          superset profile is used or supported, then what features are excluded or
+          included in the subset or superset profile.</p>
+          <p>A TT AF document instance for which a compliance claim is made must specify
+          a <code>ttp:profile</code> attribute on its root element as defined by <a
+          href="#parameter-attribute-profile"><b>6.2.7 ttp:profile</b></a>.</p>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="doctypes" id="doctypes"></a>4 Document Types</h2>
+        <p>This section defines the following TT AF Abstract Document Types:</p>
+        <ul>
+          <li>
+            <p><a href="#dfxp-content-doctype"><b>4.1 DFXP Content</b></a></p>
+          </li>
+        </ul>
+        <p>Each abstract document type consists of the following constraints:</p>
+        <ul>
+          <li>
+            <p>a non-empty collection of element types, where each element type consists
+            of a name, a (possibly empty) collection of attributes, and a content
+            specification</p>
+          </li>
+          <li>
+            <p>a non-empty collection of element types that may appear as the document
+            element</p>
+          </li>
+        </ul>
+        <p>An Abstract Document Instance may be assessed in terms of validity, and is
+        considered to be a Valid Abstract Document Instance if it satisfies the following
+        condition: if after</p>
+        <ol type="1">
+          <li>
+            <p>pruning all element information items whose names are not members of the
+            collection of element types defined by the associated abstract document type,
+            then</p>
+          </li>
+          <li>
+            <p>pruning character information item children from any remaining element in
+            case that all character children of the element denote XML whitespace
+            characters and the element's type is defined as empty in the associated
+            Abstract Document Type, and then</p>
+          </li>
+          <li>
+            <p>pruning all attribute information items having expanded names such that
+            the namespace URI of the expanded names are not listed in <a
+            href="#namespace-vocab-table"><b>Table 1 – Namespaces</b></a>,</p>
+          </li>
+        </ol>
+        <p>then the document element is one of the document element types permitted by
+        the associated abstract document type, the descendants of the document element
+        satisfy their respective element type's content specifications, all required
+        attributes are present, and the declared value of each attribute satisfies the
+        type declared by the associated abstract document type.</p>
+        <div class="note">
+          <p class="prefix"><b>Note:</b></p>
+          <p>While a conformant processor may not <em>a priori</em> reject a conformant
+          document instance, a given document instance may be constrained by the author
+          or authoring tool to satisfy a more restrictive definition of validity.</p>
+        </div>
+        <div class="div2">
+          <h3><a name="dfxp-content-doctype" id="dfxp-content-doctype"></a>4.1 DFXP
+          Content</h3>
+          <p>DFXP Content is an abstract document type of the Timed Text Authoring Format
+          intended to be used for interchange among distribution systems. This document
+          type is defined in terms of the element and attribute vocabulary specified in
+          <a href="#vocabulary"><b>5 Vocabulary</b></a>.</p>
+          <p>This specification defines two types of normative schemas that may be used
+          to validate a subset of conformant DFXP document instances:</p>
+          <ul>
+            <li>
+              <p><a href="#dfxp-schema-rnc"><b>C.1 Relax NG Schema</b></a></p>
+            </li>
+            <li>
+              <p><a href="#dfxp-schema-xsd"><b>C.2 XML Schema Definition (XSD)
+              Schema</b></a></p>
+            </li>
+          </ul>
+          <p>The (root) document element of a DFXP document instance must be a
+          <code>tt</code> element, as defined by <a
+          href="#document-structure-vocabulary-tt"><b>7.1.1 tt</b></a>.</p>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="vocabulary" id="vocabulary"></a>5 Vocabulary</h2>
+        <p>This section defines the namespaces, profiles, and vocabulary (as an element
+        an attribute catalog) of the Timed Text Authoring Format (TT AF) as follows:</p>
+        <ul>
+          <li>
+            <p><a href="#vocabulary-namespaces"><b>5.1 Namespaces</b></a></p>
+          </li>
+          <li>
+            <p><a href="#vocabulary-profiles"><b>5.2 Profiles</b></a></p>
+          </li>
+          <li>
+            <p><a href="#vocabulary-overview"><b>5.3 Catalog</b></a></p>
+          </li>
+        </ul>
+        <div class="div2">
+          <h3><a name="vocabulary-namespaces" id="vocabulary-namespaces"></a>5.1
+          Namespaces</h3>
+          <p>The Timed Text Authoring Format (TT AF) employs a number of namespaces for
+          elements and certain global attributes. The following table specifies this set
+          of namespaces and indicates the default prefix used within this specification
+          and the normative URI that denotes each namespace.</p>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>In a specific document instance, it is not required that the default
+            prefixes shown below are used. Any prefix or namespace binding that satisfies
+            the constraints of XML Namespaces may be used that is associated with the
+            specified namespace URI.</p>
+          </div>
+          <table summary="HTML Table" id="namespace-vocab-table" class="common">
+            <caption>
+              Table 1 – Namespaces
+            </caption>
+            <col width="25%" span="1" />
+            <tbody>
+              <tr>
+                <th rowspan="1" colspan="1">Name</th>
+                <th rowspan="1" colspan="1">Prefix</th>
+                <th rowspan="1" colspan="1">Value</th>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">TT</td>
+                <td rowspan="1" colspan="1"><code>tt:</code></td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1</code></td>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">TT Parameter</td>
+                <td rowspan="1" colspan="1"><code>ttp:</code></td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1#parameter</code></td>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">TT Style</td>
+                <td rowspan="1" colspan="1"><code>tts:</code></td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1#style</code></td>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">TT Style Extensions</td>
+                <td rowspan="1" colspan="1"><code>ttsx:</code></td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1#style-extension</code></td>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">TT Metadata</td>
+                <td rowspan="1" colspan="1"><code>ttm:</code></td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1#metadata</code></td>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">TT Metadata Extensions</td>
+                <td rowspan="1" colspan="1"><code>ttmx:</code></td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1#metadata-extension</code></td>
+              </tr>
+            </tbody>
+          </table>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>If a reference to an element type is used in this specification and the
+            name of the element type is not namespace qualified, then the TT Namespace
+            applies.</p>
+          </div>
+        </div>
+        <div class="div2">
+          <h3><a name="vocabulary-profiles" id="vocabulary-profiles"></a>5.2
+          Profiles</h3>
+          <p>The Timed Text Authoring Format (TT AF) employs a number of profiles of its
+          vocabulary and associated semantics. The following table specifies this set of
+          profiles and indicates a normative name for each profile.</p>
+          <table summary="HTML Table" id="profile-vocab-table" class="common">
+            <caption>
+              Table 2 – Profiles
+            </caption>
+            <col width="25%" span="1" />
+            <tbody>
+              <tr>
+                <th rowspan="1" colspan="1">Name</th>
+                <th rowspan="1" colspan="1">Value</th>
+              </tr>
+              <tr>
+                <td rowspan="1" colspan="1">DFXP</td>
+                <td rowspan="1" colspan="1">
+                <code>http://www.w3.org/2006/10/ttaf1#profile-dfxp</code></td>
+              </tr>
+            </tbody>
+          </table>
+          <p/>
+          <p>A convention is defined for use by content authors to indicate use of a
+          subtractive or additive delta to a predefined profile by using an optional
+          <em>sub-profile</em> suffix of a profile URI: if a sub-profile is subtractive
+          (results in a proper subset), then the <em>sub-profile</em> is expressed as
+          "-token"; if additive (results in a proper superset), then it is expressed as
+          "+token", where <em>token</em> expresses an author determined sub-profile that
+          adheres to the <code>xsd:NCName</code> data type defined in <a
+          href="#xsd-2">[XML Schema Part 2]</a>, §3.3.7.</p>
+          <p>All tokens used in a sub-profile suffix that do not start with the prefix
+          <code>x-</code> are reserved for future standardization.</p>
+          <p>The profile of a document instance is specified using a
+          <code>ttp:profile</code> attribute as defined by <a
+          href="#parameter-attribute-profile"><b>6.2.7 ttp:profile</b></a>.</p>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>A TT AF authoring system may indicate the profile of TT AF used in a
+            document instance by specifying a <code>ttp:profile</code> attribute. A TT AF
+            content processor may make use of this profile value to associate a document
+            instance with a schema or processing functions.</p>
+          </div>
+          <p>An example of an author defined "tiny" subtractive sub-profile of DFXP is
+          shown below in <a href="#dfxp-example-sub-profile"><b>Example Fragment – DFXP
+          Subtractive Profile</b></a>.</p>
+          <table summary="HTML Table" id="dfxp-example-sub-profile" class="example">
+            <caption>
+              Example Fragment – DFXP Subtractive Profile
+            </caption>
+            <tbody>
+              <tr>
+                <td rowspan="1" colspan="1">
+                  <div class="exampleInner">
+<pre>
+&lt;tt
+  ttp:profile="http://www.w3.org/2006/10/ttaf1#profile-dfxp-x-tiny"
+  xml:lang=""
+  xmlns="http://www.w3.org/2006/10/ttaf1"
+  xmlns:ttp="http://www.w3.org/2006/10/ttaf1#parameter"&gt;
+ ...
+&lt;/tt&gt;
+</pre>
+                  </div>
+                </td>
+              </tr>
+            </tbody>
+          </table>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>Because the above example is an author defined sub-profile (as opposed to
+            a future W3C defined profile), the sub-profile token contains the prefix
+            <code>x-</code>.</p>
+          </div>
+        </div>
+        <div class="div2">
+          <h3><a name="vocabulary-overview" id="vocabulary-overview"></a>5.3 Catalog</h3>
+          <p>The vocabulary of the Timed Text Authoring Format (TT AF) is defined in the
+          following major catalogs (divisions of vocabulary):</p>
+          <ul>
+            <li>
+              <p><a href="#core-vocabulary-overview"><b>5.3.1 Core Catalog</b></a></p>
+            </li>
+            <li>
+              <p><a href="#extension-vocabulary-overview"><b>5.3.2 Extension
+              Catalog</b></a></p>
+            </li>
+          </ul>
+          <p>The core catalog defines the baseline, core vocabulary of the TT AF, and, in
+          particular, the vocabulary of DFXP. The extensions catalog serves as a
+          placeholder for extensions to the core vocabulary defined by DFXP.</p>
+          <div class="div3">
+            <h4><a name="core-vocabulary-overview"
+            id="core-vocabulary-overview"></a>5.3.1 Core Catalog</h4>
+            <p>The core vocabulary catalog is intended to satisfy the needs of DFXP while
+            providing a baseline vocabulary for future profiles. This vocabulary is
+            divided into distinct categories, specified in detail in the following
+            sections:</p>
+            <ul>
+              <li>
+                <p><a href="#parameters"><b>6 Parameters</b></a></p>
+              </li>
+              <li>
+                <p><a href="#content"><b>7 Content</b></a></p>
+              </li>
+              <li>
+                <p><a href="#styling"><b>8 Styling</b></a></p>
+              </li>
+              <li>
+                <p><a href="#layout"><b>9 Layout</b></a></p>
+              </li>
+              <li>
+                <p><a href="#timing"><b>10 Timing</b></a></p>
+              </li>
+              <li>
+                <p><a href="#animation"><b>11 Animation</b></a></p>
+              </li>
+              <li>
+                <p><a href="#metadata"><b>12 Metadata</b></a></p>
+              </li>
+            </ul>
+            <p>The core element vocabulary specified for use with a TT AF document
+            instance is enumerated in <a href="#element-vocab-table"><b>Table 3 – Element
+            Vocabulary</b></a>.</p>
+            <table summary="HTML Table" id="element-vocab-table" class="common">
+              <caption>
+                Table 3 – Element Vocabulary
+              </caption>
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <th rowspan="1" colspan="1">Module</th>
+                  <th rowspan="1" colspan="1">Elements</th>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Animation</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#animation-vocabulary-set">set</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Content</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#document-structure-vocabulary-body">body</a>, <a
+                  href="#content-vocabulary-div">div</a>, <a
+                  href="#content-vocabulary-p">p</a>, <a
+                  href="#content-vocabulary-span">span</a>, <a
+                  href="#content-vocabulary-br">br</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Document</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#document-structure-vocabulary-tt">tt</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Head</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#document-structure-vocabulary-head">head</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Layout</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#layout-vocabulary-layout">layout</a>, <a
+                  href="#layout-vocabulary-region">region</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Metadata</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#metadata-vocabulary-metadata">metadata</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Metadata Items</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#metadata-vocabulary-actor">ttm:actor</a>, <a
+                  href="#metadata-vocabulary-agent">ttm:agent</a>, <a
+                  href="#metadata-vocabulary-copyright">ttm:copyright</a>, <a
+                  href="#metadata-vocabulary-desc">ttm:desc</a>, <a
+                  href="#metadata-vocabulary-name">ttm:name</a>, <a
+                  href="#metadata-vocabulary-title">ttm:title</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Styling</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#styling-vocabulary-styling">styling</a>, <a
+                  href="#styling-vocabulary-style">style</a></td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <p>Element vocabulary groups that are used in defining content models for TT
+            AF element types are enumerated in <a
+            href="#element-vocab-group-table"><b>Table 4 – Element Vocabulary
+            Groups</b></a>.</p>
+            <table summary="HTML Table" id="element-vocab-group-table" class="common">
+              <caption>
+                Table 4 – Element Vocabulary Groups
+              </caption>
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <th rowspan="1" colspan="1">Group</th>
+                  <th rowspan="1" colspan="1">Elements</th>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Animation.class</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#animation-vocabulary-set">set</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Block.class</td>
+                  <td rowspan="1" colspan="1"><a href="#content-vocabulary-div">div</a> |
+                  <a href="#content-vocabulary-p">p</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Inline.class</td>
+                  <td rowspan="1" colspan="1"><a href="#content-vocabulary-span">span</a>
+                  | <a href="#content-vocabulary-span">br</a> | <code>#PCDATA</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Metadata.class</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#metadata-vocabulary-metadata">metadata</a> | <a
+                  href="#metadata-vocabulary-copyright">ttm:agent</a> | <a
+                  href="#metadata-vocabulary-copyright">ttm:copyright</a> | <a
+                  href="#metadata-vocabulary-desc">ttm:desc</a> | <a
+                  href="#metadata-vocabulary-title">ttm:title</a></td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <p>The attribute vocabulary specified for use with the core vocabulary
+            catalog is enumerated in <a href="#attribute-vocab-table"><b>Table 5 –
+            Attribute Vocabulary</b></a>.</p>
+            <table summary="HTML Table" id="attribute-vocab-table" class="common">
+              <caption>
+                Table 5 – Attribute Vocabulary
+              </caption>
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <th rowspan="1" colspan="1">Module</th>
+                  <th rowspan="1" colspan="1">Attributes</th>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Core Attributes</td>
+                  <td rowspan="1" colspan="1"><a href="#content-attribute-id">xml:id</a>,
+                  <a href="#content-attribute-lang">xml:lang</a>, <a
+                  href="#content-attribute-space">xml:space</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Layout</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#layout-attribute-region">region</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Metadata Attributes</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#metadata-attribute-agent">ttm:agent</a>, <a
+                  href="#metadata-attribute-role">ttm:role</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Parameter Attributes</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#parameter-attribute-cellResolution">ttp:cellResolution</a>, <a
+                  href="#parameter-attribute-clockMode">ttp:clockMode</a>, <a
+                  href="#parameter-attribute-frameRate">ttp:frameRate</a>, <a
+                  href="#parameter-attribute-frameRateMultiplier">ttp:frameRateMultipler</a>,
+                  <a href="#parameter-attribute-markerMode">ttp:markerMode</a>, <a
+                  href="#parameter-attribute-pixelAspectRatio">ttp:pixelAspectRatio</a>,
+                  <a href="#parameter-attribute-profile">ttp:profile</a>, <a
+                  href="#parameter-attribute-smpteMode">ttp:smpteMode</a>, <a
+                  href="#parameter-attribute-subFrameRate">ttp:subFrameRate</a>, <a
+                  href="#parameter-attribute-tickRate">ttp:tickRate</a>, <a
+                  href="#parameter-attribute-timeBase">ttp:timeBase</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Styling</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#style-attribute-style">style</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Styling Attributes</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#style-attribute-backgroundColor">tts:backgroundColor</a>, <a
+                  href="#style-attribute-color">tts:color</a>, <a
+                  href="#style-attribute-direction">tts:direction</a>, <a
+                  href="#style-attribute-display">tts:display</a>, <a
+                  href="#style-attribute-displayAlign">tts:displayAlign</a>, <a
+                  href="#style-attribute-dynamicFlow">tts:dynamicFlow</a>, <a
+                  href="#style-attribute-extent">tts:extent</a>, <a
+                  href="#style-attribute-fontFamily">tts:fontFamily</a>, <a
+                  href="#style-attribute-fontSize">tts:fontSize</a>, <a
+                  href="#style-attribute-fontStyle">tts:fontStyle</a>, <a
+                  href="#style-attribute-fontWeight">tts:fontWeight</a>, <a
+                  href="#style-attribute-lineHeight">tts:lineHeight</a>, <a
+                  href="#style-attribute-opacity">tts:opacity</a>, <a
+                  href="#style-attribute-origin">tts:origin</a>, <a
+                  href="#style-attribute-overflow">tts:overflow</a>, <a
+                  href="#style-attribute-padding">tts:padding</a>, <a
+                  href="#style-attribute-showBackground">tts:showBackground</a>, <a
+                  href="#style-attribute-textAlign">tts:textAlign</a>, <a
+                  href="#style-attribute-textDecoration">tts:textDecoration</a>, <a
+                  href="#style-attribute-textOutline">tts:textOutline</a>, <a
+                  href="#style-attribute-unicodeBidi">tts:unicodeBidi</a>, <a
+                  href="#style-attribute-visibility">tts:visibility</a>, <a
+                  href="#style-attribute-wrapOption">tts:wrapOption</a>, <a
+                  href="#style-attribute-writingMode">tts:writingMode</a>, <a
+                  href="#style-attribute-zIndex">tts:zIndex</a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1">Timing Attributes</td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#timing-attribute-begin">begin</a>, <a
+                  href="#timing-attribute-dur">dur</a>, <a
+                  href="#timing-attribute-end">end</a>, <a
+                  href="#timing-attribute-timeContainer">timeContainer</a></td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>All vocabulary defined by the TT AF consistently makes use of the
+              so-called <em>lowerCamelCase</em> naming convention. In some cases, this
+              results in the change of a name when the name was based upon another
+              specification that used a different naming convention.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="extension-vocabulary-overview"
+            id="extension-vocabulary-overview"></a>5.3.2 Extension Catalog</h4>
+            <p>The extension vocabulary catalog is intended for use by future profiles of
+            the TT AF.</p>
+            <p>In this version of this specification, no standardized extension
+            vocabulary is defined. Two namespaces are specifically reserved by <a
+            href="#namespace-vocab-table"><b>Table 1 – Namespaces</b></a> for metadata
+            and style extension vocabulary:</p>
+            <ul>
+              <li>
+                <p>TT Style Extensions</p>
+              </li>
+              <li>
+                <p>TT Metadata Extensions</p>
+              </li>
+            </ul>
+            <p>In addition to standardized extension vocabulary, a conforming TT AF
+            document instance may contain arbitrary namespace qualified elements that
+            reside in any namespace other than those namespaces defined for use with this
+            specification. Furthermore, a conforming TT AF document instance may contain
+            arbitrary namespace qualified attributes on TT AF defined vocabulary where
+            such attributes reside in any namespace other than those defined for use with
+            this specification.</p>
+          </div>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="parameters" id="parameters"></a>6 Parameters</h2>
+        <p>This section specifies the <em>parameters</em> matter of the core vocabulary
+        catalog, where parameters are to be understood as information that is either (1)
+        essential or (2) of significant importance for the purpose of interpreting the
+        semantics of other types of information expressed by core vocabulary items or for
+        establishing a processing context by means of which TT AF content can be related
+        to an external environment.</p>
+        <div class="div2">
+          <h3><a name="parameters-element-vocabulary"
+          id="parameters-element-vocabulary"></a>6.1 Element Vocabulary</h3>
+          <p>No parameters related element vocabulary is defined for use in the core
+          vocabulary catalog.</p>
+        </div>
+        <div class="div2">
+          <h3><a name="parameters-attribute-vocabulary"
+          id="parameters-attribute-vocabulary"></a>6.2 Attribute Vocabulary</h3>
+          <p>The following attributes are defined in the TT Parameter Namespace.</p>
+          <ul>
+            <li>
+              <p><a href="#parameter-attribute-cellResolution"><b>6.2.1
+              ttp:cellResolution</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-clockMode"><b>6.2.2
+              ttp:clockMode</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-frameRate"><b>6.2.3
+              ttp:frameRate</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-frameRateMultiplier"><b>6.2.4
+              ttp:frameRateMultiplier</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-markerMode"><b>6.2.5
+              ttp:markerMode</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-pixelAspectRatio"><b>6.2.6
+              ttp:pixelAspectRatio</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-profile"><b>6.2.7 ttp:profile</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-smpteMode"><b>6.2.8
+              ttp:smpteMode</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-subFrameRate"><b>6.2.9
+              ttp:subFrameRate</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-tickRate"><b>6.2.10
+              ttp:tickRate</b></a></p>
+            </li>
+            <li>
+              <p><a href="#parameter-attribute-timeBase"><b>6.2.11
+              ttp:timeBase</b></a></p>
+            </li>
+          </ul>
+          <p>Unless explicitly stated otherwise, linear white-space (LWSP) may appear
+          between tokens of a value of a TT Parameter.</p>
+          <div class="div3">
+            <h4><a name="parameter-attribute-cellResolution"
+            id="parameter-attribute-cellResolution"></a>6.2.1 ttp:cellResolution</h4>
+            <p>The <code>ttp:cellResolution</code> attribute may be used by an author to
+            express the number of horizontal and vertical cells into which the root
+            container region area is divided for the purpose of expressing presentation
+            semantics in terms of a uniform grid.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-cellResolution-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:cellResolution
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:cellResolution
+  : columns rows                            // <em>columns</em> != 0; <em>rows</em> != 0
+columns | rows
+  : <a href="#style-value-digit">&lt;digit&gt;</a>+
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If not specified, the number of columns and rows must be considered to be
+            32 and 15, respectively. If specified, then columns or rows must not be zero
+            (0).</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The choice of values 32 and 15 are based on this being the maximum
+              number of columns and rows defined by <a
+              href="#cea608c">[CEA-608-C]</a>.</p>
+            </div>
+            <p>A <code>ttp:cellResolution</code> attribute is considered to be
+            significant only when specified on the <code>tt</code> element.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The use of a uniform grid is employed only for the purpose of measuring
+              lengths and expressing coordinates. In particular, it is not assumed that
+              the presentation of text or the alignment of individual glyph areas is
+              coordinated with this grid. Such alignment is possible, but requires the
+              use of a monospaced font and a font size whose EM square exactly matches
+              the cell size.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-clockMode"
+            id="parameter-attribute-clockMode"></a>6.2.2 ttp:clockMode</h4>
+            <p>The <code>ttp:clockMode</code> attribute is used to specify the
+            interpretation of time expressions as real-time time coordinates when
+            operating with time base of <code>clock</code> as defined by <a
+            href="#parameter-attribute-timeBase"><b>6.2.11 ttp:timeBase</b></a>.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>See <a href="#timing-time-value-expressions"><b>10.3 Time Value
+              Expressions</b></a> for the specification of time expression syntax.</p>
+            </div>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-clockMode-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:clockMode
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:clockMode
+  : "local"
+  | "gps"
+  | "utc"
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the time base, defined by <a
+            href="#parameter-attribute-timeBase"><b>6.2.11 ttp:timeBase</b></a>, is
+            designated as <code>clock</code>, then this parameter applies as follows: if
+            the parameter's value is <code>local</code>, then time expressions are
+            interpreted as local wall-clock time coordinates; if <code>utc</code>, then
+            time expressions are interpreted as UTC time coordinates <a
+            href="#utc">[UTC]</a>; if <code>gps</code>, then time expressions are
+            interpreted as GPS time coordinates <a href="#gps">[GPS]</a>.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The primary difference between GPS time and UTC time is that GPS time is
+              not adjusted for leap seconds, while UTC time is adjusted as follows: UTC =
+              TAI (<em>Temp Atomique International</em>) + <em>leap seconds accumulated
+              since 1972</em>. TAI is maintained by the <em>Bureau International des
+              Poids et Mesures</em> (BIPM) in Sevres, France. The GPS system time is
+              steered to a Master Clock (MC) at the US Naval Observatory which is kept
+              within a close but unspecified tolerance of TAI.</p>
+            </div>
+            <p>If not specified, the value of this parameter must be considered to be
+            <code>utc</code>.</p>
+            <p>A <code>ttp:clockMode</code> attribute is considered to be significant
+            only when specified on the <code>tt</code> element.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-frameRate"
+            id="parameter-attribute-frameRate"></a>6.2.3 ttp:frameRate</h4>
+            <p>The <code>ttp:frameRate</code> attribute is used to specify the frame rate
+            of a related media object or the intrinsic frame rate of a document instance
+            in case it is intended to function as an independent media object.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-frameRate-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:frameRate
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:frameRate
+  : <a
+href="#style-value-digit">&lt;digit&gt;</a>+                                // <em>value</em> &gt; 0
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>The frame rate that applies to a document instance is used to interpret
+            time expressions that are expressed in <em>frames</em> as defined by <a
+            href="#timing-value-timeExpression"><b>10.3.1
+            &lt;timeExpression&gt;</b></a>.</p>
+            <p>A frame is interpreted as a division of a second of media time, such that
+            if the frame rate is specified as <em>F</em>, then a second of media time is
+            divided into <em>F</em> intervals of equal duration, where each interval is
+            labeled as frame <em>f</em>, with <em>f</em> ∈ [0…<em>F−1</em>].</p>
+            <p>If not specified, the frame rate must be considered to be equal to some
+            application defined frame rate, or if no application defined frame rate
+            applies, then thirty (30) frames per second. If specified, then the frame
+            rate must be greater than zero (0).</p>
+            <p>A <code>ttp:frameRate</code> attribute is considered to be significant
+            only when specified on the <code>tt</code> element.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-frameRateMultiplier"
+            id="parameter-attribute-frameRateMultiplier"></a>6.2.4
+            ttp:frameRateMultiplier</h4>
+            <p>The <code>ttp:frameRateMultiplier</code> attribute is used to specify a
+            multiplier to be applied to the frame rate specified by a
+            <code>ttp:frameRate</code> attribute in order to compute the effective frame
+            rate.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table"
+            id="parameter-attribute-frameRateMultiplier-syntax" class="syntax">
+              <caption>
+                Syntax Representation – ttp:frameRateMultiplier
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:frameRateMultiplier
+  : numerator ( ":" denominator )?          // <em>denominator</em> != 0
+numerator | denominator
+  : <a href="#style-value-digit">&lt;digit&gt;</a>+
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>A frame rate multiplier is used when the desired frame rate cannot be
+            expressed as an integral number of frames per second.</p>
+            <p>If not specified, the frame rate multiplier must be considered to be equal
+            to one (1:1). If a denominator is specified, then it must not be zero
+            (0).</p>
+            <p>A <code>ttp:frameRateMultiplier</code> attribute is considered to be
+            significant only when specified on the <code>tt</code> element.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The frame rate multiplier used for synchronizing with NTSC <a
+              href="#smpte170m">[SMPTE 170M]</a> formatted video objects at 30 frames per
+              second is nominally 1000:1001. The nominal frame rate of NTSC video is
+              defined as the chrominance sub-carrier frequency of 3,579,545.45…Hz (=
+              5.0MHz × 63/88) times the ratio 2/455 divided by the number of horizontal
+              lines per frame of 525, which yields a frame rate of 29.970029970029… (= 30
+              × 1000/1001) frames per second. Other frame rate multipliers apply to
+              different regions of usage and video format standards.</p>
+            </div>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>Except in the case of PAL/M, the frame rate multiplier used for
+              synchronizing with PAL formatted video objects at 25 frames per second is
+              nominally 1:1.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-markerMode"
+            id="parameter-attribute-markerMode"></a>6.2.5 ttp:markerMode</h4>
+            <p>The <code>ttp:markerMode</code> attribute is used to specify constraints
+            on the interpretation and use of time expressions that correspond with <a
+            href="#smpte12m">[SMPTE 12M]</a> time coordinates when operating with time
+            base of <code>smpte</code> as defined by <a
+            href="#parameter-attribute-timeBase"><b>6.2.11 ttp:timeBase</b></a>.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-markerMode-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:markerMode
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:markerMode
+  : "continuous"
+  | "discontinuous"
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the time base, defined by <a
+            href="#parameter-attribute-timeBase"><b>6.2.11 ttp:timeBase</b></a>, is
+            designated as <code>smpte</code>, then this parameter applies as follows: if
+            the parameter's value is <code>continuous</code>, then <a
+            href="#smpte12m">[SMPTE 12M]</a> time coordinates may be assumed to be linear
+            and either monotonically increasing or decreasing; however, if
+            <code>discontinuous</code>, then any assumption must not be made regarding
+            linearity or monotonicity of time coordinates.</p>
+            <p>If not specified, the value of this parameter must be considered to be
+            <code>continuous</code>.</p>
+            <p>A <code>ttp:markerMode</code> attribute is considered to be significant
+            only when specified on the <code>tt</code> element.</p>
+            <p>If a value of <code>discontinuous</code> applies, then time expressions
+            must not be converted to either media time or real time coordinates,
+            arithmetical operators (addition, multiplication) are not defined on time
+            expressions, and, consequently, any expression of a duration must be
+            ignored.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>When operating with <code>smpte</code> time base and
+              <code>discontinuous</code> marker mode, there is no effective time
+              coordinate space; rather, all time expressions are interpreted as labeled
+              synchronization events (markers), where some external synchronization
+              context emits these events, which, when they correspond with time
+              expressions that denote the same label, cause a temporal interval to begin
+              or end accordingly.</p>
+              <p>An additional side-effect of operating in <code>discontinuous</code>
+              mode is that time expressions of children have no necessary relationship
+              with time expressions of their temporal container; that is, temporal
+              containers and children of these containers are temporally activated and
+              inactivated independently based on the occurrence of a labeled
+              synchronization (marker) event.</p>
+            </div>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The notion of marker discontinuity as captured by this parameter is
+              logically independent from the method used to count frames as expressed by
+              the <code>ttp:smpteMode</code> parameter. In particular, even if the
+              <code>ttp:smpteMode</code> parameter is specified as <code>dropNTSC</code>
+              or <code>dropPAL</code>, the marker mode may be specified as
+              <code>continuous</code>, even in the presence of frame count
+              discontinuities induced by the frame counting method, unless there were
+              some other non-linearity or discontinuity in marker labeling, for example,
+              two consecutive frames labeled as <code>10:00:00:00</code> and
+              <code>10:00:01:00</code>.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-pixelAspectRatio"
+            id="parameter-attribute-pixelAspectRatio"></a>6.2.6 ttp:pixelAspectRatio</h4>
+            <p>The <code>ttp:pixelAspectRatio</code> attribute may be used by a content
+            author to express the aspect ratio of non-square pixels in the production of
+            content that makes use of pixel coordinates.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-pixelAspectRatio-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:pixelAspectRatio
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:pixelAspectRatio
+  : width ":" height                        // <em>width</em> != 0; <em>height</em> != 0
+width | height
+  : <a href="#style-value-digit">&lt;digit&gt;</a>+
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If not specified, then square pixels (i.e., aspect ratio 1:1) must be
+            assumed to apply. If specified, then width or height must not be zero.</p>
+            <p>A <code>ttp:pixelAspectRatio</code> attribute is considered to be
+            significant only when specified on the <code>tt</code> element.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>This parameter may be used by a content transcoder or translator in
+              order to convert pixel measurements between different pixel aspect ratios
+              while still maintaining authorial layout intentions.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-profile"
+            id="parameter-attribute-profile"></a>6.2.7 ttp:profile</h4>
+            <p>The <code>ttp:profile</code> attribute may be used by a content author to
+            express the profile of the Timed Text Authoring Format (TT AF) used in a
+            document instance.</p>
+            <p>If specified, the value of this attribute must adhere to the
+            <code>xsd:anyURI</code> data type defined by <a href="#xsd-2">[XML Schema
+            Part 2]</a>, §3.2.17, and, further, must specify a profile URI as defined by
+            <a href="#vocabulary-profiles"><b>5.2 Profiles</b></a>.</p>
+            <p>If not specified, then the Distribution Format Exchange Profile (DFXP)
+            must be assumed to apply.</p>
+            <p>A <code>ttp:profile</code> attribute is considered to be significant only
+            when specified on the <code>tt</code> element.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-smpteMode"
+            id="parameter-attribute-smpteMode"></a>6.2.8 ttp:smpteMode</h4>
+            <p>The <code>ttp:smpteMode</code> attribute is used to specify constraints on
+            the interpretation and use of frame counts that correspond with <a
+            href="#smpte12m">[SMPTE 12M]</a> time coordinates when operating with time
+            base of <code>smpte</code> as defined by <a
+            href="#parameter-attribute-timeBase"><b>6.2.11 ttp:timeBase</b></a>.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-smpteMode-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:smpteMode
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:smpteMode
+  : "dropNTSC"
+  | "dropPAL"
+  | "nonDrop"
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the time base, defined by <a
+            href="#parameter-attribute-timeBase"><b>6.2.11 ttp:timeBase</b></a>, is
+            designated as <code>smpte</code>, then this parameter applies as follows: if
+            the parameter's value is <code>nonDrop</code>, then, within any given second
+            of a time expression, frames count from 0 to <em>N−1</em>, where <em>N</em>
+            is the value specified by the <code>ttp:frameRate</code> parameter, but while
+            ignoring any value specified by the <code>ttp:frameRateMultiplier</code>
+            parameter.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>When operating in <code>nonDrop</code> mode, a second of a time
+              expression may or may not be equal to a second of real time during normal
+              (1x speed) forward playback. If the <code>ttp:frameRateMultiplier</code>
+              parameter is specified and is not equal to 1:1, then a second of a time
+              expression will either be shorter or longer than a second of elapsed play
+              in real time.</p>
+            </div>
+            <p>If this parameter's value is <code>dropNTSC</code>, then, within any given
+            second of a time expression except the second <code>00</code>, frames count
+            from 0 to <em>N−1</em>, where <em>N</em> is the value specified by the
+            <code>ttp:frameRate</code> parameter, but while ignoring any value specified
+            by the <code>ttp:frameRateMultiplier</code> parameter. If the second of a
+            time expression is <code>00</code> and the minute of the time expression is
+            not <code>00</code>, <code>10</code>, <code>20</code>, <code>30</code>,
+            <code>40</code>, or <code>50</code>, then frame codes <code>00</code> and
+            <code>01</code> are dropped during that second; otherwise, these frame codes
+            are not dropped.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>For example, when operating in <code>dropNTSC</code> mode with
+              <code>ttp:frameRate</code> of <code>30</code>, a discontinuity in frame
+              count occurs between consecutive frames as shown in the following sequence
+              of time expressions: <code>01:08:59:28</code>, <code>01:08:59:29</code>,
+              <code>01:09:00:02</code>, <code>01:09:00:03</code>.</p>
+            </div>
+            <p>If this parameter's value is <code>dropPAL</code>, then, within any given
+            second of a time expression except the second <code>00</code>, frames count
+            from 0 to <em>N−1</em>, where <em>N</em> is the value specified by the
+            <code>ttp:frameRate</code> parameter, but while ignoring any value specified
+            by the <code>ttp:frameRateMultiplier</code> parameter. If the second of a
+            time expression is <code>00</code> and the minute of the time expression is
+            even but not <code>00</code>, <code>20</code>, or <code>40</code>, then frame
+            codes <code>00</code> through <code>03</code> are dropped during that second;
+            otherwise, these frame codes are not dropped.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>For example, when operating in <code>dropPAL</code> mode with
+              <code>ttp:frameRate</code> of <code>30</code>, a discontinuity in frame
+              count occurs between consecutive frames as shown in the following sequence
+              of time expressions: <code>01:09:59:28</code>, <code>01:09:59:29</code>,
+              <code>01:10:00:04</code>, <code>01:10:00:04</code>.</p>
+            </div>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The <code>dropPAL</code> mode is also known as the <em>M/PAL</em> or
+              <em>PAL (M)</em> drop-frame code, which uses PAL modulation with the NTSC
+              frame rate of ~29.97 frames/second. The M/PAL system is used primarily in
+              Brazil.</p>
+            </div>
+            <p>If not specified, then <code>nonDrop</code> must be assumed to apply.</p>
+            <p>A <code>ttp:smpteMode</code> attribute is considered to be significant
+            only when specified on the <code>tt</code> element.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-subFrameRate"
+            id="parameter-attribute-subFrameRate"></a>6.2.9 ttp:subFrameRate</h4>
+            <p>The <code>ttp:subFrameRate</code> attribute is used to specify the
+            sub-frame rate of a related media object or the intrinsic sub-frame rate of a
+            document instance in case it is intended to function as an independent media
+            object.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-subFrameRate-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:subFrameRate
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:subFrameRate
+  : <a
+href="#style-value-digit">&lt;digit&gt;</a>+                                // <em>value</em> &gt; 0
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>The sub-frame rate that applies to a document instance is used to
+            interpret time expressions that are expressed in <em>sub-frames</em> as
+            defined by <a href="#timing-value-timeExpression"><b>10.3.1
+            &lt;timeExpression&gt;</b></a>.</p>
+            <p>A sub-frame is interpreted as a division of a frame of media time, such
+            that if the sub-frame rate is specified as <em>S</em>, then a frame of media
+            time is divided into <em>S</em> intervals of equal duration, where each
+            interval is labeled as sub-frame <em>s</em>, with <em>s</em> ∈
+            [0…<em>S−1</em>].</p>
+            <p>If not specified, the sub-frame rate must be considered to be equal to one
+            (1). If specified, then the sub-frame rate must be greater than zero (0).</p>
+            <p>A <code>ttp:subFrameRate</code> attribute is considered to be significant
+            only when specified on the <code>tt</code> element.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The sub-frame is sometimes referred to as a <em>field</em> in the
+              context of synchronization with an interlaced video media object.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-tickRate"
+            id="parameter-attribute-tickRate"></a>6.2.10 ttp:tickRate</h4>
+            <p>The <code>ttp:tickRate</code> attribute is used to specify the tick rate
+            of a related media object or the intrinsic tick rate of content of a document
+            instance in case it is intended to function as an independent media
+            object.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-tickRate-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:tickRate
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:tickRate
+  : <a
+href="#style-value-digit">&lt;digit&gt;</a>+                                // <em>value</em> &gt; 0
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>The tick rate that applies to a document instance is used to interpret
+            time expressions that are expressed in <em>ticks</em> by using the
+            <code>t</code> metric as defined by <a
+            href="#timing-value-timeExpression"><b>10.3.1
+            &lt;timeExpression&gt;</b></a>.</p>
+            <p>A tick is interpreted as an integral division of a second of media time,
+            such that if the tick rate is specified as <em>T</em>, then a second of media
+            time is divided into <em>T</em> intervals of equal duration, where each
+            interval is labeled as tick <em>t</em>, with <em>t</em> ∈
+            [0…<em>T−1</em>].</p>
+            <p>If not specified, then if a frame rate is specified, the tick rate must be
+            considered to be the effective frame rate multiplied by the sub-frame rate
+            (i.e., ticks are interpreted as sub-frames); or, if no frame rate is
+            specified, the tick rate must be considered to be one (1) tick per second of
+            media time. If specified, then the tick rate must not be zero (0).</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>There is no predefined relationship between ticks and frames or
+              sub-frames. Ticks are an arbitrary division of seconds that permit use of
+              fixed point arithmetic rather than fractional (and potentially inexact)
+              expressions of seconds.</p>
+            </div>
+            <p>A <code>ttp:tickRate</code> attribute is considered to be significant only
+            when specified on the <code>tt</code> element.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="parameter-attribute-timeBase"
+            id="parameter-attribute-timeBase"></a>6.2.11 ttp:timeBase</h4>
+            <p>The <code>ttp:timeBase</code> attribute is used to specify the temporal
+            coordinate system by means of which time expressions are interpreted in a
+            document instance.</p>
+            <p>If specified, the value of this attribute must adhere to the following
+            syntax:</p>
+            <table summary="HTML Table" id="parameter-attribute-timeBase-syntax"
+            class="syntax">
+              <caption>
+                Syntax Representation – ttp:timeBase
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+ttp:timeBase
+  : "media"
+  | "smpte"
+  | "clock"
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the time base is designated as <code>media</code>, then a time
+            expression denotes a coordinate in some media object's time line, where the
+            media object may be an external media object with which the content of a
+            document instance is to be synchronized, or it may be the content of a
+            document instance itself in a case where the timed text content is intended
+            to establish an independent time line.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>When using a media time base, if that time base is paused or scaled
+              positively or negatively, then it is expected that the presentation of
+              associated Timed Text content will be similarly paused, accelerated, or
+              decelerated, respectively. The means for controlling an external media time
+              base is outside the scope of this specification.</p>
+            </div>
+            <p>If the time base is designated as <code>smpte</code>, then a time
+            expression denotes a <a href="#smpte12m">[SMPTE 12M]</a> time coordinate with
+            which the content of a document instance is to be synchronized. In this case,
+            the value of the <code>ttp:markerMode</code> and <code>ttp:smpteMode</code>
+            parameters apply, as defined by <a
+            href="#parameter-attribute-markerMode"><b>6.2.5 ttp:markerMode</b></a> and <a
+            href="#parameter-attribute-smpteMode"><b>6.2.8 ttp:smpteMode</b></a>,
+            respectively</p>
+            <p>If the time base is designated as <code>clock</code>, then the time
+            expression denotes a coordinate in some real-world time line as established
+            by some real-time clock, such as the local wall-clock time or UTC
+            (Coordinated Universal Time) or GPS (Global Positioning System) time
+            lines.</p>
+            <p>If not specified, the default time base must be considered to be
+            <code>media</code>.</p>
+            <p>A <code>ttp:timeBase</code> attribute is considered to be significant only
+            when specified on the <code>tt</code> element.</p>
+            <p>When operating with either <code>media</code> or <code>smpte</code> time
+            bases, a diachronic presentation of a document instance may be subject to
+            transformations of the controlling time line, such as temporal reversal,
+            dilation (expansion), or constriction (compression); however, when operating
+            with the <code>clock</code> time base, no transformations are permitted, and
+            diacrhonic presentation proceeds on a linear, monotonically increasing time
+            line based on the passage of real time.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>Due to there being only one time base parameter that applies to a given
+              document instance, the interpretation of time expressions is uniform
+              throughout the document instance.</p>
+            </div>
+          </div>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="content" id="content"></a>7 Content</h2>
+        <p>This section specifies the <em>content</em> matter of the core vocabulary
+        catalog.</p>
+        <div class="div2">
+          <h3><a name="content-element-vocabulary"
+          id="content-element-vocabulary"></a>7.1 Element Vocabulary</h3>
+          <p>The following elements specify the structure and principal content aspects
+          of a document instance:</p>
+          <ul>
+            <li>
+              <p><a href="#document-structure-vocabulary-tt"><b>7.1.1 tt</b></a></p>
+            </li>
+            <li>
+              <p><a href="#document-structure-vocabulary-head"><b>7.1.2 head</b></a></p>
+            </li>
+            <li>
+              <p><a href="#document-structure-vocabulary-body"><b>7.1.3 body</b></a></p>
+            </li>
+            <li>
+              <p><a href="#content-vocabulary-div"><b>7.1.4 div</b></a></p>
+            </li>
+            <li>
+              <p><a href="#content-vocabulary-p"><b>7.1.5 p</b></a></p>
+            </li>
+            <li>
+              <p><a href="#content-vocabulary-span"><b>7.1.6 span</b></a></p>
+            </li>
+            <li>
+              <p><a href="#content-vocabulary-br"><b>7.1.7 br</b></a></p>
+            </li>
+          </ul>
+          <div class="div3">
+            <h4><a name="document-structure-vocabulary-tt"
+            id="document-structure-vocabulary-tt"></a>7.1.1 tt</h4>
+            <p>The <code>tt</code> element serves as the root, document element of a
+            document instance.</p>
+            <p>The <code>tt</code> element accepts as its children zero or one
+            <code>head</code> element followed by zero or one <code>body</code>
+            element.</p>
+            <table summary="HTML Table" id="elt-syntax-tt" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: tt
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;tt
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang"><span class="reqattr">xml:lang</span></a> = string
+  <a
+href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>) : default
+  {<em>any attribute in TT Parameter namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#document-structure-vocabulary-head">head</a>?, <a
+href="#document-structure-vocabulary-body">body</a>?
+&lt;/tt&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>The temporal beginning and ending of a document instance represented by a
+            <code>tt</code> element is defined in relationship with some external
+            application or presentation context. The temporal interval defined by these
+            points is referred to subsequently as the <em>external time
+            interval</em>.</p>
+            <p>A document instance has an implicit duration that is equal to the implicit
+            duration of the <code>body</code> element of the document, if present, or
+            zero, if not present.</p>
+            <p>An <code>xml:lang</code> attribute must be specified on the
+            <code>tt</code> element. If the attribute value is empty, it signifies that
+            there is no default language that applies to the text contained within the
+            document instance.</p>
+            <p>If no <code>xml:space</code> attribute is specified upon the
+            <code>tt</code> element, then it must be considered as if the attribute had
+            been specified with a value of <code>default</code>.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="document-structure-vocabulary-head"
+            id="document-structure-vocabulary-head"></a>7.1.2 head</h4>
+            <p>The <code>head</code> element is a container element used to group header
+            matter, including metadata, styling, and layout information.</p>
+            <p>The <code>head</code> element accepts as its children zero or more
+            elements in the <code>Metadata.class</code> element group, followed by zero
+            or one <code>styling</code> element, followed by zero or one
+            <code>layout</code> element.</p>
+            <p>Any metadata specified by children in the <code>Metadata.class</code>
+            element group applies semantically to the document instance as a whole, and
+            not just the <code>head</code> element.</p>
+            <p>A <code>styling</code> child element is used to specify style constructs
+            that are referenced from other style constructs, by layout constructs, and by
+            content elements.</p>
+            <p>A <code>layout</code> child element is used to specify layout constructs
+            that are referenced by content elements.</p>
+            <table summary="HTML Table" id="elt-syntax-head" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: head
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;head
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a
+href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#styling-vocabulary-styling">styling</a>?, <a
+href="#layout-vocabulary-layout">layout</a>?
+&lt;/head&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>To the extent that time semantics apply to the content of the
+            <code>head</code> element, the implied time interval of this element is
+            defined to be coterminous with the external time interval.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="document-structure-vocabulary-body"
+            id="document-structure-vocabulary-body"></a>7.1.3 body</h4>
+            <p>The <code>body</code> element functions as a logical container and a
+            temporal structuring element for a sequence of textual content units
+            represented as logical divisions.</p>
+            <p>The <code>body</code> element accepts as its children zero or more
+            elements in the <code>Metadata.class</code> element group, followed by zero
+            or more elements in the <code>Animation.class</code> element group, followed
+            by zero or more <code>div</code> elements.</p>
+            <p>Any metadata specified by children in the <code>Metadata.class</code>
+            element group applies semantically to the <code>body</code> element and its
+            descendants as a whole.</p>
+            <p>Any animation elements specified by children in the
+            <code>Animation.class</code> element group apply semantically to the
+            <code>body</code> element.</p>
+            <table summary="HTML Table" id="elt-syntax-body" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: body
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;body
+  <a href="#timing-attribute-begin">begin</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-dur">dur</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-end">end</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#layout-attribute-region">region</a> = IDREF
+  <a href="#style-attribute-style">style</a> = IDREFS
+  <a
+href="#timing-attribute-timeContainer">timeContainer</a> = (<em>par</em>|<em>seq</em>)
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute in TT Metadata namespace ...</em>}
+  {<em>any attribute in TT Style namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#element-vocab-group-table">Animation.class</a>*, <a
+href="#content-vocabulary-div">div</a>*
+&lt;/body&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>An author may specify a temporal interval for a <code>body</code> element
+            using the <code>begin</code>, <code>dur</code>, and <code>end</code>
+            attributes. If the begin point of this interval remains unspecified, then the
+            begin point is interpreted as the begin point of the external time interval.
+            Similarly, if the end point of this interval remains unspecified, then the
+            end point is interpreted as the end point of the external time interval.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>A TT AF document instance referenced from a SMIL presentation is
+              expected to follow the same timing rules as apply to other SMIL media
+              objects.</p>
+            </div>
+            <p>If relative begin or end times are specified on the <code>body</code>
+            element, then these times are resolved by reference to the begin and end time
+            of the external time interval.</p>
+            <p>If the external time interval is shorter than the computed duration of the
+            <code>body</code> element, then the active time interval of a document
+            instance is truncated to the active end point of the external time
+            interval.</p>
+            <p>If no <code>timeContainer</code> attribute is specified, then a
+            <code>body</code> element must be interpreted as having <em>sequential</em>
+            time containment semantics.</p>
+            <p>If the <code>tts:extent</code> attribute is specified on the
+            <code>body</code> element, then it specifies the spatial extent of the root
+            container region in which content regions are located and presented. If no
+            <code>tts:extent</code> attribute is specified, then the spatial extent of
+            the root container region is considered to be determined by the external
+            authoring or presentation context.</p>
+            <p>An author may associate a set of style properties with a <code>body</code>
+            element by means of either the <code>style</code> attribute or inline style
+            attributes or a combination thereof.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>Style properties that are associated with a <code>body</code> element in
+              a document instance are available for style inheritance by descendant
+              content elements such as <code>div</code>, <code>p</code>, and
+              <code>span</code>.</p>
+            </div>
+            <p>The declared value of an inline style attribute on a <code>body</code>
+            element must not be <code>inherit</code>.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="content-vocabulary-div" id="content-vocabulary-div"></a>7.1.4
+            div</h4>
+            <p>The <code>div</code> element functions as a logical container and a
+            temporal structuring element for a sequence of textual content units
+            represented as logical paragraphs.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>When rendered on a continuous (non-paged) visual presentation medium, a
+              <code>div</code> element is expected to generate a single block area that
+              contains zero or more child block areas generated by the <code>div</code>
+              element's child <code>p</code> elements.</p>
+              <p>If the single block area generated by a <code>div</code> element does
+              not contain any child areas, then it is not expected to be presented.</p>
+            </div>
+            <p>The <code>div</code> element accepts as its children zero or more elements
+            in the <code>Metadata.class</code> element group, followed by zero or more
+            elements in the <code>Animation.class</code> element group, followed by zero
+            or more <code>p</code> elements.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The core vocabulary intentionally does not support nested divisions in
+              order to reduce the complexity of the profile to match that of the legacy
+              distribution formats with which the core vocabulary was designed to
+              interoperate.</p>
+            </div>
+            <p>Any metadata specified by children in the <code>Metadata.class</code>
+            element group applies semantically to the <code>div</code> element and its
+            descendants as a whole.</p>
+            <p>Any animation elements specified by children in the
+            <code>Animation.class</code> element group apply semantically to the
+            <code>div</code> element.</p>
+            <table summary="HTML Table" id="elt-syntax-div" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: div
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;div
+  <a href="#timing-attribute-begin">begin</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-dur">dur</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-end">end</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#layout-attribute-region">region</a> = IDREF
+  <a href="#style-attribute-style">style</a> = IDREFS
+  <a
+href="#timing-attribute-timeContainer">timeContainer</a> = (<em>par</em>|<em>seq</em>)
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute in TT Metadata namespace ...</em>}
+  {<em>any attribute in TT Style namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#element-vocab-group-table">Animation.class</a>*, <a
+href="#element-vocab-group-table">Block.class</a>*
+&lt;/div&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If no <code>timeContainer</code> attribute is specified, then a
+            <code>div</code> element must be interpreted as having <em>parallel</em> time
+            containment semantics.</p>
+            <p>An author may associate a set of style properties with a <code>div</code>
+            element by means of either the <code>style</code> attribute or inline style
+            attributes or a combination thereof.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>Style properties that are associated to a <code>div</code> element in a
+              document instance are available for style inheritance by descendant content
+              elements such as <code>p</code> and <code>span</code>.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="content-vocabulary-p" id="content-vocabulary-p"></a>7.1.5 p</h4>
+            <p>A <code>p</code> element represents a logical paragraph, serving as a
+            transition between block level and inline level formatting semantics.</p>
+            <p>The <code>p</code> element accepts as its children zero or more elements
+            in the <code>Metadata.class</code> element group, followed by zero or more
+            elements in the <code>Animation.class</code> element group, followed by zero
+            or more <code>span</code> element, <code>br</code> element, or text nodes
+            interpreted as anonymous spans.</p>
+            <p>Any metadata specified by children in the <code>Metadata.class</code>
+            element group applies semantically to the <code>p</code> element and its
+            descendants as a whole.</p>
+            <p>Any animation elements specified by children in the
+            <code>Animation.class</code> element group apply semantically to the
+            <code>p</code> element.</p>
+            <table summary="HTML Table" id="elt-syntax-p" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: p
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;p
+  <a href="#timing-attribute-begin">begin</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-dur">dur</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-end">end</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#layout-attribute-region">region</a> = IDREF
+  <a href="#style-attribute-style">style</a> = IDREFS
+  <a
+href="#timing-attribute-timeContainer">timeContainer</a> = (<em>par</em>|<em>seq</em>)
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute in TT Metadata namespace ...</em>}
+  {<em>any attribute in TT Style namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#element-vocab-group-table">Animation.class</a>*, <a
+href="#element-vocab-group-table">Inline.class</a>*
+&lt;/p&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If a sequence of children of a <code>p</code> element consists solely of
+            character information items, then that sequence must be considered to be an
+            <em>anonymous span</em> for the purpose of applying style properties that
+            apply to <code>span</code> elements.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="content-vocabulary-span" id="content-vocabulary-span"></a>7.1.6
+            span</h4>
+            <p>The <code>span</code> element functions as a logical container and a
+            temporal structuring element for a sequence of textual content units having
+            inline level formatting semantics.</p>
+            <p>When presented on a visual medium, a <code>span</code> element is intended
+            to generate a sequence of inline areas, each containing one or more glyph
+            areas.</p>
+            <p>The <code>span</code> element accepts as its children zero or more
+            elements in the <code>Metadata.class</code> element group, followed by zero
+            or more elements in the <code>Animation.class</code> element group, followed
+            by zero or more <code>br</code> element or text nodes interpreted as
+            anonymous spans.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The core vocabulary intentionally does not support nested spans in order
+              to reduce the complexity of the profile to match that of the legacy
+              distribution formats with which the core vocabulary was designed to
+              interoperate.</p>
+            </div>
+            <p>Any metadata specified by children in the <code>Metadata.class</code>
+            element group applies semantically to the <code>span</code> element and its
+            descendants as a whole.</p>
+            <p>Any animation elements specified by children in the
+            <code>Animation.class</code> element group apply semantically to the
+            <code>span</code> element.</p>
+            <table summary="HTML Table" id="elt-syntax-span" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: span
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;span
+  <a href="#timing-attribute-begin">begin</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-dur">dur</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#timing-attribute-end">end</a> = <a
+href="#timing-value-timeExpression">&lt;timeExpression&gt;</a>
+  <a href="#layout-attribute-region">region</a> = IDREF
+  <a href="#style-attribute-style">style</a> = IDREFS
+  <a
+href="#timing-attribute-timeContainer">timeContainer</a> = (<em>par</em>|<em>seq</em>)
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute in TT Metadata namespace ...</em>}
+  {<em>any attribute in TT Style namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#element-vocab-group-table">Animation.class</a>*, <a
+href="#element-vocab-group-table">Inline.class</a>*
+&lt;/span&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+          </div>
+          <div class="div3">
+            <h4><a name="content-vocabulary-br" id="content-vocabulary-br"></a>7.1.7
+            br</h4>
+            <p>The <code>br</code> element denotes an explicit line break.</p>
+            <table summary="HTML Table" id="elt-syntax-br" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: br
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;br
+  <a href="#style-attribute-style">style</a> = IDREFS
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute in TT Metadata namespace ...</em>}
+  {<em>any attribute in TT Style namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#element-vocab-group-table">Animation.class</a>*
+&lt;/br&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>When presented on a visual medium, the presence of a <code>br</code>
+            element must be interpreted as a forced line break.</p>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The visual presentation of a <code>br</code> element is intended to
+              produce the same effect as the ASCII control code <code>CR</code> followed
+              by the control code <code>NL</code> when presented on a teletype device.
+              Therefore, two <code>br</code> elements in sequence will produce a
+              different effect than a single <code>br</code> element.</p>
+            </div>
+          </div>
+        </div>
+        <div class="div2">
+          <h3><a name="content-attribute-vocabulary"
+          id="content-attribute-vocabulary"></a>7.2 Attribute Vocabulary</h3>
+          <p>This section defines the following common attributes used with many or all
+          element types in the core vocabulary catalog:</p>
+          <ul>
+            <li>
+              <p><a href="#content-attribute-id"><b>7.2.1 xml:id</b></a></p>
+            </li>
+            <li>
+              <p><a href="#content-attribute-lang"><b>7.2.2 xml:lang</b></a></p>
+            </li>
+            <li>
+              <p><a href="#content-attribute-space"><b>7.2.3 xml:space</b></a></p>
+            </li>
+          </ul>
+          <div class="div3">
+            <h4><a name="content-attribute-id" id="content-attribute-id"></a>7.2.1
+            xml:id</h4>
+            <p>The <code>xml:id</code> attribute is used as defined by <a
+            href="#xmlid">[XML ID]</a>.</p>
+            <p>The <code>xml:id</code> attribute may be used with any element in the core
+            vocabulary catalog.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="content-attribute-lang" id="content-attribute-lang"></a>7.2.2
+            xml:lang</h4>
+            <p>The <code>xml:lang</code> attribute is used as defined by <a
+            href="#xml11">[XML 1.1]</a>, §2.12, <em>Language Identification</em>.</p>
+            <p>The <code>xml:lang</code> attribute must be specified on the
+            <code>tt</code> element and may be specified by an instance of any other
+            element type in the core vocabulary catalog.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="content-attribute-space" id="content-attribute-space"></a>7.2.3
+            xml:space</h4>
+            <p>The <code>xml:space</code> attribute is used as defined by <a
+            href="#xml11">[XML 1.1]</a>, §2.10, <em>White Space Handling</em>.</p>
+            <p>The <code>xml:space</code> attribute may be used with any element in the
+            core vocabulary catalog.</p>
+            <p>The semantics of the value <code>default</code> are fixed to mean that
+            when performing presentation processing of a document instance as described
+            by <a href="#semantics-region-layout-step-2"><b>9.3.2 Synchronic Flow
+            Processing</b></a>, processing must occur as if the following properties were
+            specified on the affected elements of the intermediate XSL-FO document:</p>
+            <ul>
+              <li>
+                <p><code>suppress-at-line-break="auto"</code></p>
+              </li>
+              <li>
+                <p><code>linefeed-treatment="treat-as-space"</code></p>
+              </li>
+              <li>
+                <p><code>white-space-collapse="true"</code></p>
+              </li>
+              <li>
+                <p>
+                <code>white-space-treatment="ignore-if-surrounding-linefeed"</code></p>
+              </li>
+            </ul>
+            <p>Similarly, the semantics of the value <code>preserve</code> are fixed to
+            mean that when performing presentation processing, processing must occur as
+            if the following properties were specified on the affected elements of the
+            intermediate XSL-FO document:</p>
+            <ul>
+              <li>
+                <p><code>suppress-at-line-break="retain"</code></p>
+              </li>
+              <li>
+                <p><code>linefeed-treatment="preserve"</code></p>
+              </li>
+              <li>
+                <p><code>white-space-collapse="false"</code></p>
+              </li>
+              <li>
+                <p><code>white-space-treatment="preserve"</code></p>
+              </li>
+            </ul>
+            <p>When performing other types of processing intended to eventually result in
+            a visual presentation by means other than those described in this
+            specification, the semantics of space collapsing and preservation as
+            described above should be respected. For other types of processing, the
+            treatment of the <code>xml:space</code> attribute is processor dependent, but
+            should respect the semantics described above if possible.</p>
+          </div>
+        </div>
+      </div>
+      <div class="div1">
+        <h2><a name="styling" id="styling"></a>8 Styling</h2>
+        <p>This section specifies the <em>styling</em> matter of the core vocabulary
+        catalog, where styling is to be understood as a separable layer of information
+        that applies to content and that denotes authorial intentions about the
+        presentation of that content.</p>
+        <p>No normative use of an <code>&lt;?xml-stylesheet ... ?&gt;</code> processing
+        instruction is defined by this specification.</p>
+        <div class="div2">
+          <h3><a name="styling-element-vocabulary"
+          id="styling-element-vocabulary"></a>8.1 Element Vocabulary</h3>
+          <p>The following elements specify the structure and principal styling aspects
+          of a document instance:</p>
+          <ul>
+            <li>
+              <p><a href="#styling-vocabulary-styling"><b>8.1.1 styling</b></a></p>
+            </li>
+            <li>
+              <p><a href="#styling-vocabulary-style"><b>8.1.2 style</b></a></p>
+            </li>
+          </ul>
+          <div class="div3">
+            <h4><a name="styling-vocabulary-styling"
+            id="styling-vocabulary-styling"></a>8.1.1 styling</h4>
+            <p>The <code>styling</code> element is a container element used to group
+            styling matter, including metadata that applies to styling matter.</p>
+            <p>The <code>styling</code> element accepts as its children zero or more
+            elements in the <code>Metadata.class</code> element group, followed by zero
+            or more <code>style</code> elements.</p>
+            <table summary="HTML Table" id="elt-syntax-styling" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: styling
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;styling
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*, <a
+href="#styling-vocabulary-style">style</a>*
+&lt;/styling&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>To the extent that time semantics apply to the content of the
+            <code>styling</code> element, the implied time interval of this element is
+            defined to be coterminous with the external time interval.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="styling-vocabulary-style"
+            id="styling-vocabulary-style"></a>8.1.2 style</h4>
+            <p>The <code>style</code> element is used to define a single style
+            specification or a set of style specifications.</p>
+            <p>The <code>style</code> element accepts as its children zero or more
+            <code>metadata</code> elements.</p>
+            <table summary="HTML Table" id="elt-syntax-style" class="syntax">
+              <caption>
+                XML Representation – Element Information Item: style
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;style
+  <a href="#style-attribute-style">style</a> = IDREFS
+  <a href="#content-attribute-id">xml:id</a> = ID
+  <a href="#content-attribute-lang">xml:lang</a> = string
+  <a href="#content-attribute-space">xml:space</a> = (<em>default</em>|<em>preserve</em>)
+  {<em>any attribute in TT Style namespace ...</em>}
+  {<em>any attribute in TT Style Extension namespace ...</em>}
+  {<em>any attribute not in default or any TT namespace ...</em>}&gt;
+  <em>Content:</em> <a href="#element-vocab-group-table">Metadata.class</a>*
+&lt;/style&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p>The declared value of an inline style attribute on a <code>style</code>
+            element must not be <code>inherit</code>.</p>
+            <p>A <code>style</code> element is considered to define a <em>computed style
+            specification set</em>, where the set is determined using the following
+            ordered rules:</p>
+            <ol type="1">
+              <li>
+                <p>If a <code>style</code> attribute is specified on the
+                <code>style</code> element, then the set must be initialized so as to
+                include each style specification contained in the <em>computed style
+                specification set</em> of each element referenced by the
+                <code>style</code> attribute. If the same named style property is
+                specified by more than one such referenced computed style specification
+                set, then the value of the named style property in following referenced
+                sets takes precedence over the value of the named style property in prior
+                referenced sets, where following and prior are determined according to
+                the order of the referenced ID in the IDREFS value of the
+                <code>style</code> attribute.</p>
+              </li>
+              <li>
+                <p>If the <code>style</code> element specifies an attribute from the TT
+                Style Namespace or TT Style Extension Namespace, then each style
+                specification defined by that attribute either overrides an existing
+                style specification already contained within the set or augments the set
+                with a new style specification according to whether or not the named
+                style property of the style specification matches the named style
+                property of an existing style specification already included in the
+                set.</p>
+              </li>
+            </ol>
+            <p>Two named style properties are considered to match if their expanded names
+            match, where <em>expanded name</em> is defined by <a href="#xmlns11">[XML
+            Namespaces 1.1]</a>, §2.1, and the expanded name of a named style property is
+            the expanded name of the attribute that specifies the named style
+            property.</p>
+            <p>If a <code>style</code> element appears as a descendant of a
+            <code>region</code> element, then the <code>style</code> element must be
+            ignored for the purpose of computing referential styles as defined by <a
+            href="#semantics-style-association-referential"><b>8.4.2 Referential
+            Styling</b></a> and <a
+            href="#semantics-style-association-chained-referential"><b>8.4.3 Chained
+            Referential Styling</b></a>.</p>
+          </div>
+        </div>
+        <div class="div2">
+          <h3><a name="styling-attribute-vocabulary"
+          id="styling-attribute-vocabulary"></a>8.2 Attribute Vocabulary</h3>
+          <p>This section defines the <a href="#style-attribute-style"><b>8.2.1
+          style</b></a> attribute used with both style definition elements as well as
+          content elements.</p>
+          <p>In addition, this section specifies the following attributes in the TT Style
+          Namespace for use with style definition elements, certain layout elements, and
+          content elements that support inline style specifications:</p>
+          <ul>
+            <li>
+              <p><a href="#style-attribute-backgroundColor"><b>8.2.2
+              tts:backgroundColor</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-color"><b>8.2.3 tts:color</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-direction"><b>8.2.4 tts:direction</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-display"><b>8.2.5 tts:display</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-displayAlign"><b>8.2.6
+              tts:displayAlign</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-dynamicFlow"><b>8.2.7
+              tts:dynamicFlow</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-extent"><b>8.2.8 tts:extent</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-fontFamily"><b>8.2.9
+              tts:fontFamily</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-fontSize"><b>8.2.10 tts:fontSize</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-fontStyle"><b>8.2.11 tts:fontStyle</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-fontWeight"><b>8.2.12
+              tts:fontWeight</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-lineHeight"><b>8.2.13
+              tts:lineHeight</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-opacity"><b>8.2.14 tts:opacity</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-origin"><b>8.2.15 tts:origin</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-overflow"><b>8.2.16 tts:overflow</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-padding"><b>8.2.17 tts:padding</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-showBackground"><b>8.2.18
+              tts:showBackground</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-textAlign"><b>8.2.19 tts:textAlign</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-textDecoration"><b>8.2.20
+              tts:textDecoration</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-textOutline"><b>8.2.21
+              tts:textOutline</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-unicodeBidi"><b>8.2.22
+              tts:unicodeBidi</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-visibility"><b>8.2.23
+              tts:visibility</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-wrapOption"><b>8.2.24
+              tts:wrapOption</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-writingMode"><b>8.2.25
+              tts:writingMode</b></a></p>
+            </li>
+            <li>
+              <p><a href="#style-attribute-zIndex"><b>8.2.26 tts:zIndex</b></a></p>
+            </li>
+          </ul>
+          <p>Unless explicitly stated otherwise, linear white-space (LWSP) may appear
+          between tokens of a value of a TT Style Property.</p>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>This specification makes use of <em>lowerCamelCased</em> local names for
+            style attributes that are based upon like-named properties defined by <a
+            href="#xsl10">[XSL 1.0]</a>. This convention is likewise extended to token
+            values of such properties.</p>
+          </div>
+          <div class="note">
+            <p class="prefix"><b>Note:</b></p>
+            <p>A style property may be expressed as a specified attribute on any content
+            element type independently of whether the property applies to that element
+            type. This capability permits the expression of an inheritable style property
+            on ancestor elements to which the property property does not apply.</p>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-style" id="style-attribute-style"></a>8.2.1
+            style</h4>
+            <p>The <code>style</code> attribute is used to reference one or more
+            <code>style</code> elements each of which define a computed style
+            specification set.</p>
+            <p>The <code>style</code> attribute may be specified by an instance of the
+            following element types:</p>
+            <ul>
+              <li>
+                <p><a
+                href="#document-structure-vocabulary-body"><code>body</code></a></p>
+              </li>
+              <li>
+                <p><a href="#content-vocabulary-div"><code>div</code></a></p>
+              </li>
+              <li>
+                <p><a href="#content-vocabulary-p"><code>p</code></a></p>
+              </li>
+              <li>
+                <p><a href="#layout-vocabulary-region"><code>region</code></a></p>
+              </li>
+              <li>
+                <p><a href="#content-vocabulary-span"><code>span</code></a></p>
+              </li>
+              <li>
+                <p><a href="#styling-vocabulary-style"><code>style</code></a></p>
+              </li>
+            </ul>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>See the specific element type definitions that permit use of the
+              <code>style</code> attribute for further information on its semantics.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-backgroundColor"
+            id="style-attribute-backgroundColor"></a>8.2.2 tts:backgroundColor</h4>
+            <p>The <code>tts:backgroundColor</code> attribute is used to specify a style
+            property that defines the background color of a region or an area generated
+            by content flowed into a region.</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-backgroundColor"
+            class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#style-value-color">&lt;color&gt;</a> | <code>inherit</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>transparent</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#document-structure-vocabulary-body"><code>body</code></a>, <a
+                  href="#content-vocabulary-div"><code>div</code></a>, <a
+                  href="#content-vocabulary-p"><code>p</code></a>, <a
+                  href="#layout-vocabulary-region"><code>region</code></a>, <a
+                  href="#content-vocabulary-span"><code>span</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">no</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">N/A</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">discrete</td>
+                </tr>
+              </tbody>
+            </table>
+            <p>The <code>tts:backgroundColor</code> style is illustrated by the following
+            example.</p>
+            <table summary="HTML Table" id="style-attribute-backgroundColor-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Background Color
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style tts:extent="306px 114px"/&gt;
+  &lt;style <span class="strong">tts:backgroundColor="red"</span>/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style tts:displayAlign="after"/&gt;
+  &lt;style tts:padding="3px 40px"/&gt;
+&lt;/region&gt;
+...
+&lt;p region="r1" <span
+class="strong">tts:backgroundColor="purple"</span> tts:textAlign="center"&gt;
+  Twinkle, twinkle, little bat!&lt;br/&gt;
+  How &lt;span <span
+class="strong">tts:backgroundColor="green"</span>&gt;I wonder&lt;/span&gt; where you're at!
+&lt;/p&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table"
+            id="style-attribute-backgroundColor-example-1-images" class="example-images">
+              <caption>
+                Example Rendition – Background Color
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/backgroundColor.png"
+                  alt="TT AF backgroundColor style property" /></td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The semantics of the style property represented by this attribute are
+              based upon that defined by <a href="#xsl10">[XSL 1.0]</a>, § 7.7.2.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-color" id="style-attribute-color"></a>8.2.3
+            tts:color</h4>
+            <p>The <code>tts:color</code> attribute is used to specify a style property
+            that defines the foreground color of marks associated with an area generated
+            by content flowed into a region.</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-color" class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#style-value-color">&lt;color&gt;</a> | <code>inherit</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>transparent</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#content-vocabulary-span"><code>span</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">yes</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">N/A</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">discrete</td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>For the purpose of determining applicability of this style property,
+              each character child of a <code>p</code> element is considered to be
+              enclosed in an anonymous span.</p>
+            </div>
+            <p>The <code>tts:color</code> style is illustrated by the following
+            example.</p>
+            <table summary="HTML Table" id="style-attribute-color-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Color
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style tts:backgroundColor="black"/&gt;
+  &lt;style <span class="strong">tts:color="white"</span>/&gt;
+  &lt;style tts:displayAlign="after"/&gt;
+  &lt;style tts:textAlign="center"/&gt;
+&lt;/region&gt;
+...
+&lt;p region="r1"&gt;
+  In spring, when woods are &lt;span <span
+class="strong">tts:color="green"</span>&gt;getting green&lt;/span&gt;,&lt;br/&gt;
+  I'll try and tell you what I mean.
+&lt;/p&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table" id="style-attribute-color-example-1-images"
+            class="example-images">
+              <caption>
+                Example Rendition – Color
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/color.png"
+                  alt="DFXP color style property" /></td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The semantics of the style property represented by this attribute are
+              based upon that defined by <a href="#xsl10">[XSL 1.0]</a>, § 7.17.1.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-direction"
+            id="style-attribute-direction"></a>8.2.4 tts:direction</h4>
+            <p>The <code>tts:direction</code> attribute is used to specify a style
+            property that defines the directionality of an embedding or override
+            according to the Unicode bidirectional algorithm.</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-direction"
+            class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><code>ltr</code> | <code>rtl</code> |
+                  <code>inherit</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>ltr</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#content-vocabulary-p"><code>p</code></a>, <a
+                  href="#content-vocabulary-span"><code>span</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">yes</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">N/A</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">none</td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <p>The <code>tts:direction</code> style is illustrated by the following
+            example.</p>
+            <table summary="HTML Table" id="style-attribute-direction-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Direction
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style tts:extent="265px 84px"/&gt;
+  &lt;style tts:padding="5px"/&gt;
+  &lt;style tts:backgroundColor="black"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style tts:displayAlign="after"/&gt;
+  &lt;style tts:textAlign="center"/&gt;
+&lt;/region&gt;
+...
+&lt;p region="r1"&gt;
+  Little birds are playing&lt;br/&gt;
+  Bagpipes on the shore,&lt;br/&gt;
+  &lt;span tts:unicodeBidi="bidiOverride" <span
+class="strong">tts:direction="rtl"</span>&gt;where the tourists snore.&lt;/span&gt;
+&lt;/p&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table" id="style-attribute-direction-example-1-images"
+            class="example-images">
+              <caption>
+                Example Rendition – Direction
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/direction.png"
+                  alt="DFXP direction style property" /></td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The semantics of the style property represented by this attribute are
+              based upon that defined by <a href="#xsl10">[XSL 1.0]</a>, § 7.27.1.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-display" id="style-attribute-display"></a>8.2.5
+            tts:display</h4>
+            <p>The <code>tts:display</code> attribute is used to specify a style property
+            that defines whether an element is a candidate for layout and composition in
+            a region.</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-display"
+            class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><code>auto</code> | <code>none</code> |
+                  <code>inherit</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>auto</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#document-structure-vocabulary-body"><code>body</code></a>, <a
+                  href="#content-vocabulary-div"><code>div</code></a>, <a
+                  href="#content-vocabulary-p"><code>p</code></a>, <a
+                  href="#content-vocabulary-span"><code>span</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">no</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">N/A</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">discrete</td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the value of this attribute is <code>auto</code>, then the affected
+            element is a candidate for region layout and presentation; however, if the
+            value is <code>none</code>, then the affected element and its descendants
+            must be considered ineligible for region layout and presentation.</p>
+            <p>The <code>tts:display</code> style is illustrated by the following
+            example.</p>
+            <table summary="HTML Table" id="style-attribute-display-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Display
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style tts:extent="369px 119px"/&gt;
+  &lt;style tts:backgroundColor="black"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style tts:displayAlign="before"/&gt;
+  &lt;style tts:textAlign="start"/&gt;
+&lt;/region&gt;
+...
+&lt;div region="r1"&gt;
+  &lt;p dur="5s"&gt;
+    [[[
+    &lt;span <span class="strong">tts:display="none"</span>&gt;
+      &lt;set begin="1s" dur="1s" <span class="strong">tts:display="auto"</span>/&gt;
+      Beautiful soup,
+    &lt;/span&gt;
+    &lt;span <span class="strong">tts:display="none"</span>&gt;
+      &lt;set begin="2s" dur="1s" <span class="strong">tts:display="auto"</span>/&gt;
+      so rich and green,
+    &lt;/span&gt;
+    &lt;span <span class="strong">tts:display="none"</span>&gt;
+      &lt;set begin="3s" dur="1s" <span class="strong">tts:display="auto"</span>/&gt;
+      waiting in a hot tureen!
+    &lt;/span&gt;
+    ]]]
+  &lt;/p&gt;
+&lt;/div&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table" id="style-attribute-display-example-1-images"
+            class="example-images">
+              <caption>
+                Example Rendition – Display
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/display_0.png"
+                  alt="DFXP display style property - [0,1)" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/display_1.png"
+                  alt="DFXP display style property - [1,2)" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/display_2.png"
+                  alt="DFXP display style property - [2,3)" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/display_3.png"
+                  alt="DFXP display style property - [3,4)" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/display_4.png"
+                  alt="DFXP display style property - [4,5)" /></td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The semantics of the style property represented by this attribute are
+              based upon that defined by <a href="#css2">[CSS2]</a>, § 9.2.5.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-displayAlign"
+            id="style-attribute-displayAlign"></a>8.2.6 tts:displayAlign</h4>
+            <p>The <code>tts:displayAlign</code> attribute is used to specify a style
+            property that defines the alignment of block areas in the block progression
+            direction.</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-displayAlign"
+            class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><code>before</code> | <code>center</code> |
+                  <code>after</code> | <code>inherit</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>before</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#layout-vocabulary-region"><code>region</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">yes</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">N/A</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">none</td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <p>The <code>tts:displayAlign</code> style is illustrated by the following
+            example.</p>
+            <table summary="HTML Table" id="style-attribute-displayAlign-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Display Align
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style tts:extent="128px 66px"/&gt;
+  &lt;style tts:origin="0px 0px"/&gt;
+  &lt;style tts:backgroundColor="black"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style <span class="strong">tts:displayAlign="before"</span>/&gt;
+  &lt;style tts:textAlign="start"/&gt;
+&lt;/region&gt;
+&lt;region xml:id="r2"&gt;
+  &lt;style tts:extent="192px 66px"/&gt;
+  &lt;style tts:origin="128px 66px"/&gt;
+  &lt;style tts:backgroundColor="green"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style <span class="strong">tts:displayAlign="after"</span>/&gt;
+  &lt;style tts:textAlign="start"/&gt;
+&lt;/region&gt;
+&lt;region xml:id="r3"&gt;
+  &lt;style tts:extent="128px 66px"/&gt;
+  &lt;style tts:origin="0px 132px"/&gt;
+  &lt;style tts:backgroundColor="black"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style <span class="strong">tts:displayAlign="before"</span>/&gt;
+  &lt;style tts:textAlign="start"/&gt;
+&lt;/region&gt;
+&lt;region xml:id="r4"&gt;
+  &lt;style tts:extent="192px 66px"/&gt;
+  &lt;style tts:origin="128px 198px"/&gt;
+  &lt;style tts:backgroundColor="green"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style <span class="strong">tts:displayAlign="after"</span>/&gt;
+  &lt;style tts:textAlign="start"/&gt;
+&lt;/region&gt;
+...
+&lt;div&gt;
+  &lt;p region="r1"&gt;I sent a message to the fish:&lt;/p&gt;
+  &lt;p region="r2"&gt;I told them&lt;br/&gt; "This is what I wish."&lt;/p&gt;
+  &lt;p region="r3"&gt;The little fishes of the sea,&lt;/p&gt;
+  &lt;p region="r4"&gt;They sent an&lt;br/&gt; answer back to me.&lt;/p&gt;
+&lt;/div&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table"
+            id="style-attribute-displayAlign-example-1-images" class="example-images">
+              <caption>
+                Example Rendition – Display Align
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/displayAlign.png"
+                  alt="DFXP displayAlign style property" /></td>
+                </tr>
+              </tbody>
+            </table>
+            <div class="note">
+              <p class="prefix"><b>Note:</b></p>
+              <p>The semantics of the style property represented by this attribute are
+              based upon that defined by <a href="#xsl10">[XSL 1.0]</a>, § 7.13.4.</p>
+            </div>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-dynamicFlow"
+            id="style-attribute-dynamicFlow"></a>8.2.7 tts:dynamicFlow</h4>
+            <p>The <code>tts:dynamicFlow</code> attribute is used to specify a style
+            property that defines how to dynamically flow content into and out of a
+            region over some time interval.</p>
+            <p>This style property applies only to a region when the
+            <code>tts:overflow</code> property for that region has the value
+            <code>scroll</code>.</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-dynamicFlow"
+            class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><code>none</code> | <a
+                  href="#style-value-flowFunction">&lt;flowFunction&gt;</a>+ <a
+                  href="#style-value-flowIntervalFunction">&lt;flowIntervalFunction&gt;</a>*</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>none</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#layout-vocabulary-region"><code>region</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">no</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">N/A</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">none</td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the value of this attribute is <code>none</code>, then no dynamic flow
+            semantics apply.</p>
+            <p>If the value of this attribute contains a single <a
+            href="#style-value-flowFunction">&lt;flowFunction&gt;</a>, then that flow
+            function applies equally to <em>fill into</em>, <em>reflow within</em>, and
+            <em>clear from</em> dynamic flow operations.</p>
+            <p>If a reflow <code>within()</code> flow function is specified, but no clear
+            <code>out()</code> flow function is specified, or vice-versa, then the
+            function applies equally to both <em>reflow within</em> and <em>clear
+            from</em> dynamic flow operations.</p>
+            <p>If either <code>intra()</code> or <code>inter()</code> <a
+            href="#style-value-flowIntervalFunction">&lt;flowIntervalFunction&gt;</a> is
+            not specified, then the <code>auto</code> value for the missing <a
+            href="#style-value-flowIntervalFunction">&lt;flowIntervalFunction&gt;</a>
+            applies.</p>
+            <p>The normative processing model for dynamic flow behavior is specified in
+            <a href="#dynamicFlowModel"><b>B Dynamic Flow Processing Model</b></a>.</p>
+            <p>The <code>tts:dynamicFlow</code> style is illustrated by the following
+            example, and depicted in an <a href="images/dynamicFlow_RU_animated.svg">SVG
+            Animation</a>.</p>
+            <table summary="HTML Table" id="style-attribute-dynamicFlow-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Dynamic Flow
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style tts:extent="140px 70px"/&gt;
+  &lt;style tts:displayAlign="after"/&gt;
+  &lt;style tts:backgroundColor="transparent"/&gt;
+  &lt;style tts:fontFamily="proportionalSansSerif"/&gt;
+  &lt;style tts:fontSize="18px"/&gt;
+  &lt;style <span class="strong">tts:overflow="scroll"</span>/&gt;
+  &lt;style <span
+class="strong">tts:dynamicFlow="in(word,jump) out(line,smooth) inter(3s)"</span>/&gt;
+&lt;/region&gt;
+...
+&lt;p region="r1"&gt;
+  &lt;span tts:backgroundColor="black" tts:color="white"&gt;
+    Five o'clock tea!&lt;br/&gt;
+    Ever to thee,&lt;br/&gt;
+    Faithful I'll be,&lt;br/&gt;
+    Five o'clock tea!&lt;br/&gt;
+    &lt;br/&gt;
+    &lt;br/&gt;
+    &lt;br/&gt;
+  &lt;/span&gt;
+&lt;/p&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table" id="style-attribute-dynamicFlow-example-2-images"
+            class="example-images-bordered">
+              <caption>
+                Example Rendition – Dynamic Flow – Discrete Frames
+              </caption>
+              <col width="136px" span="1" />
+              <col width="136px" span="1" />
+              <col width="136px" span="1" />
+              <col width="136px" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_0.png"
+                  alt="DFXP dynamic flow style property - frame 0" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_1.png"
+                  alt="DFXP dynamic flow style property - frame 1" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_2.png"
+                  alt="DFXP dynamic flow style property - frame 2" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_3.png"
+                  alt="DFXP dynamic flow style property - frame 3" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_4.png"
+                  alt="DFXP dynamic flow style property - frame 4" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_5.png"
+                  alt="DFXP dynamic flow style property - frame 5" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_6.png"
+                  alt="DFXP dynamic flow style property - frame 6" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_7.png"
+                  alt="DFXP dynamic flow style property - frame 7" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_8.png"
+                  alt="DFXP dynamic flow style property - frame 8" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_9.png"
+                  alt="DFXP dynamic flow style property - frame 9" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_10.png"
+                  alt="DFXP dynamic flow style property - frame 10" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_11.png"
+                  alt="DFXP dynamic flow style property - frame 11" /></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_12.png"
+                  alt="DFXP dynamic flow style property - frame 12" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_13.png"
+                  alt="DFXP dynamic flow style property - frame 13" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_14.png"
+                  alt="DFXP dynamic flow style property - frame 14" /></td>
+                  <td rowspan="1" colspan="1"><img src="images/dynamicFlow_snake_15.png"
+                  alt="DFXP dynamic flow style property - frame 15" /></td>
+                </tr>
+              </tbody>
+            </table>
+          </div>
+          <div class="div3">
+            <h4><a name="style-attribute-extent" id="style-attribute-extent"></a>8.2.8
+            tts:extent</h4>
+            <p>The <code>tts:extent</code> attribute is used to specify the
+            <em>width</em> and <em>height</em> of a region area (which may be the root
+            container region).</p>
+            <p>This attribute may be specified by any style specification element or
+            content element that permits use of attributes in the TT Style Namespace;
+            however, this attribute applies as a style property only to those element
+            types indicated in the following table.</p>
+            <table summary="HTML Table" id="style-property-details-extent"
+            class="common">
+              <col width="25%" span="1" />
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Values:</em></td>
+                  <td rowspan="1" colspan="1"><code>auto</code> | <a
+                  href="#style-value-length">&lt;length&gt;</a> <a
+                  href="#style-value-length">&lt;length&gt;</a> |
+                  <code>inherit</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Initial:</em></td>
+                  <td rowspan="1" colspan="1"><code>auto</code></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Applies to:</em></td>
+                  <td rowspan="1" colspan="1"><a
+                  href="#document-structure-vocabulary-body"><code>body</code></a>, <a
+                  href="#layout-vocabulary-region"><code>region</code></a></td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Inherited:</em></td>
+                  <td rowspan="1" colspan="1">no</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Percentages:</em></td>
+                  <td rowspan="1" colspan="1">relative to width and height of root
+                  container region</td>
+                </tr>
+                <tr>
+                  <td rowspan="1" colspan="1"><em>Animatable:</em></td>
+                  <td rowspan="1" colspan="1">none</td>
+                </tr>
+              </tbody>
+            </table>
+            <p>If the value of this attribute consists of two <a
+            href="#style-value-length">&lt;length&gt;</a> specifications, then they must
+            be interpreted as <em>width</em> and <em>height</em>, where the first
+            specification is the <em>width</em>, and the second specification is the
+            <em>height</em>.</p>
+            <p>If the value of this attribute is <code>auto</code>, then the initial
+            value of the style property must be considered to be the same as the root
+            container extent. The root container extent is determined either by a
+            <code>tts:extent</code> specified on the <code>body</code> element, if
+            present, or by the external authoring context, if not present. In the former
+            case, if the width and height is expressed in terms of two <a
+            href="#style-value-length">&lt;length&gt;</a> specifications, then these
+            specifications must be expressed as non-percentage, definite lengths using
+            pixel units.</p>
+            <p>The <code>tts:extent</code> style is illustrated by the following
+            example.</p>
+            <table summary="HTML Table" id="style-attribute-extent-example-1"
+            class="example">
+              <caption>
+                Example Fragment – Extent
+              </caption>
+              <tbody>
+                <tr>
+                  <td rowspan="1" colspan="1">
+                    <div class="exampleInner">
+<pre>
+&lt;region xml:id="r1"&gt;
+  &lt;style <span class="strong">tts:extent="330px 122px"</span>/&gt;
+  &lt;style tts:backgroundColor="black"/&gt;
+  &lt;style tts:color="white"/&gt;
+  &lt;style tts:displayAlign="after"/&gt;
+  &lt;style tts:textAlign="center"/&gt;
+&lt;/region&gt;
+...
+&lt;p region="r1"&gt;
+  'Tis the voice of the Lobster:&lt;br/&gt;
+  I heard him declare,&lt;br/&gt;
+  "You have baked me too brown,&lt;br/&gt;
+  I must sugar my hair."
+&lt;/p&gt;
+</pre>
+                    </div>
+                  </td>
+                </tr>
+              </tbody>
+            </table>
+            <p/>
+            <table summary="HTML Table" id="style-attribute-extent-example-1-images"
+            class="example-images">
+              <caption>
+                Example Rendition – Extent
+              </caption>
+              <tbody>
+                <tr>