--- a/ttml10/spec/ttaf1-dfxp.xml	Thu Jun 27 03:49:01 2013 -0600
+++ b/ttml10/spec/ttaf1-dfxp.xml	Thu Jun 27 10:25:13 2013 -0600
@@ -549,8 +549,8 @@
 <label>Computed Cell Size</label>
 <def>
 <p>The size (extent) of a cell computed by dividing the width of the <emph>Root Container
-Region</emph> (in pixels) by the column count, i.e., the number of cells in the horizontal axis, and by dividing
-the height of the <emph>Root Container Region</emph> (in pixels) by the row count, i.e., the number of cells in the vertical
+Region</emph> by the column count, i.e., the number of cells in the horizontal axis, and by dividing
+the height of the <emph>Root Container Region</emph> by the row count, i.e., the number of cells in the vertical
 axis, where the column and row counts are determined by the <att>ttp:cellResolution</att> parameter attribute.</p>
 </def>
 </gitem>