Fix horrible 'at the time of the change' (before or after?) ambiguity in the 'Starting of transitions' text that I wrote a while ago.

Author: dbaron

css3-transitions/Overview.html

@@ -784,22 +784,23 @@ <h3 id=the-transition-shorthand-property-><span class=secno>2.5. </span>
 
   <h2 id=starting><span class=secno>3. </span> Starting of transitions</h2>
 
-  <p> When the value of an animatable property changes, implementations must
-   decide what transitions to start based on the values of the &lsquo;<a
-   href="#transition-property"><code
+  <p> When the computed value of an animatable property changes,
+   implementations must decide what transitions to start based on the values
+   of the &lsquo;<a href="#transition-property"><code
    class=property>transition-property</code></a>&rsquo;, &lsquo;<a
    href="#transition-duration"><code
    class=property>transition-duration</code></a>&rsquo;, &lsquo;<a
    href="#transition-timing-function"><code
    class=property>transition-timing-function</code></a>&rsquo;, and &lsquo;<a
    href="#transition-delay"><code
    class=property>transition-delay</code></a>&rsquo; properties at the time
-   of the change. Since this specification does not define what property
-   changes are considered simultaneous, authors should be aware that changing
-   any of the transition properties a small amount of time after making a
-   change that might transition can result in behavior that varies between
-   implementations, since the changes might be considered simultaneous in
-   some implementations but not others.
+   the animatable property would first have its new computed value. Since
+   this specification does not define when computed values change, and thus
+   what changes to computed values are considered simultaneous, authors
+   should be aware that changing any of the transition properties a small
+   amount of time after making a change that might transition can result in
+   behavior that varies between implementations, since the changes might be
+   considered simultaneous in some implementations but not others.
 
   <p class=note>Say something about simulaneity
 

css3-transitions/Overview.src.html

@@ -738,12 +738,14 @@ <h2 id="starting">
       </h2>
 
       <p>
-        When the value of an animatable property changes,
+        When the computed value of an animatable property changes,
         implementations must decide what transitions to start based on
         the values of the 'transition-property', 'transition-duration',
         'transition-timing-function', and 'transition-delay' properties
-        at the time of the change.  Since this specification does not
-        define what property changes are considered simultaneous,
+        at the time the animatable property would first have its new
+        computed value.  Since this specification does not define
+        when computed values change, and thus what changes to
+        computed values are considered simultaneous,
         authors should be aware that changing any of the transition
         properties a small amount of time after making a change that
         might transition can result in behavior that varies between