Clarify the limits of Active Area per its syntax (#288)

w3c · Jan 30, 2018 · fb9f7d4 · fb9f7d4
1 parent 97c568a
commit fb9f7d4
Showing 1 changed file with 4 additions and 1 deletion.
diff --git a/imsc1/spec/ttml-ww-profiles.html b/imsc1/spec/ttml-ww-profiles.html
@@ -978,7 +978,10 @@ <h4>ittp:activeArea</h4>
           property where a two percentage value position is used.</p>
         </div>
 
-        <p>The <a>Active Area</a> SHALL NOT extend outside the root container in any dimension.</p>
+        <div class='note'>
+          <p>The syntax of the <code>ittp:activeArea</code> parameter is such that the <a>Active Area</a> cannot extend outside the
+          root container in any dimension.</p>
+        </div>
 
         <p>The <code>ittp:activeArea</code> attribute is considered to be significant only when specified on the <code>tt</code>
         element.</p>