--- a/ttml10/spec/ttaf1-dfxp.xml Thu Jun 28 07:53:06 2012 -0600
+++ b/ttml10/spec/ttaf1-dfxp.xml Thu Jul 19 00:38:48 2012 -0600
@@ -7281,6 +7281,15 @@
document instances,
<emph>DOC<sub><phrase>inter<sub>0</sub></phrase></sub></emph> …
<emph>DOC<sub><phrase>inter<sub>N−1</sub></phrase></sub></emph>.</p>
+<note role="elaboration">
+Where an implementation is able to detect significant similarity between two
+adjacent synchronic document instances,
+<emph>DOC<sub><phrase>inter<sub>0</sub></phrase></sub></emph> …
+<emph>DOC<sub><phrase>inter<sub>N−1</sub></phrase></sub></emph>,
+then it is preferred that the implementation make the transition between
+presenting the two instances as smooth as possible, e.g., as described
+by <bibref ref="cea608c">, § C.3.
+</note>
</div3>
<div3 id="semantics-region-layout-step-2">
<head>Synchronic Flow Processing</head>