--- a/ttml-ww-profiles/ttml-ww-profiles.html	Wed Jun 10 21:41:46 2015 -0700
+++ b/ttml-ww-profiles/ttml-ww-profiles.html	Wed Jun 10 22:05:07 2015 -0700
@@ -742,7 +742,8 @@
               <td>
                 <div class="exampleInner">
                   <pre>ittp:aspectRatio
-  : numerator denominator                                               // numerator != 0; denominator != 0
+  : numerator denominator          // with int(numerator) != 0 and int(denominator) != 0
+                                   // where int(s) parses string s as a decimal integer.
         
 numerator | denominator
   : &lt;digit&gt;+

--- a/ttml-ww-profiles/ttml-ww-profiles.source.html	Wed Jun 10 21:41:46 2015 -0700
+++ b/ttml-ww-profiles/ttml-ww-profiles.source.html	Wed Jun 10 22:05:07 2015 -0700
@@ -414,7 +414,8 @@
                 <div class="exampleInner">
                   <pre>
 ittp:aspectRatio
-  : numerator denominator                                               // numerator != 0; denominator != 0
+  : numerator denominator          // with int(numerator) != 0 and int(denominator) != 0
+                                   // where int(s) parses string s as a decimal integer.
         
 numerator | denominator
   : &lt;digit&gt;+