[css-animations] Clarify effect of updating animation properties while running

Author: Sylvain Galineau

css-animations/Overview.bs

@@ -105,9 +105,13 @@ Animations</h2>
 	identifiers in the computed value of the 'animation-name' property and the
 	animation uses a valid @keyframes rule. Once an
 	animation has started it continues until it ends or the 'animation-name' is
-	removed. The values used for the keyframes and animation properties are
-	snapshotted at the time the animation starts. Changing them during the
-	execution of the animation has no effect. Note also that changing the value
+	removed. Changing the values of the animation properties while the animation
+	is running has no effect on the amount of time elapsed since the animation
+	started running i.e. once the animation is running, updates to 'animation-delay'
+	have no effect. The remainder of the animation runs according to the new
+	animation property values.
+
+	Note also that changing the value
 	of 'animation-name' does not necessarily restart an animation (e.g., if a list
 	of animations are applied and one is removed from the list, only that animation
 	will stop; The other animations will continue). In order to restart an animation,

css-animations/Overview.html

@@ -56,7 +56,7 @@
 </p>
   <h1 class="p-name no-ref" id=title>CSS Animations Level 1</h1>
   <h2 class="no-num no-toc no-ref heading settled heading" id=subtitle><span class=content>Editor’s Draft,
-    <span class=dt-updated><span class=value-title title=20141007>7 October 2014</span></span></span></h2>
+    <span class=dt-updated><span class=value-title title=20141016>16 October 2014</span></span></span></h2>
   <div data-fill-with=spec-metadata><dl><dt>This version:<dd><a class=u-url href=http://dev.w3.org/csswg/css3-animations/>http://dev.w3.org/csswg/css3-animations/</a><dt>Latest version:<dd><a href=http://www.w3.org/TR/css3-animations/>http://www.w3.org/TR/css3-animations/</a><dt>Editor’s Draft:<dd><a href=http://dev.w3.org/csswg/css3-animations/>http://dev.w3.org/csswg/css3-animations/</a><dt>Previous Versions:<dd><a href=http://www.w3.org/TR/2013/WD-css3-animations-20130219/ rel=previous>http://www.w3.org/TR/2013/WD-css3-animations-20130219/</a><dd><a href=http://www.w3.org/TR/2012/WD-css3-animations-20120403/ rel=previous>http://www.w3.org/TR/2012/WD-css3-animations-20120403/</a>
     <dt>Feedback:</dt>
         <dd><a href="mailto:www-style@w3.org?subject=%5Bcss-animations%5D%20feedback">www-style@w3.org</a>
@@ -248,9 +248,13 @@ <h2 class="heading settled heading" data-level=3 id=animations><span class=secno
 	identifiers in the computed value of the <a class=property data-link-type=propdesc href=#propdef-animation-name title=animation-name>animation-name</a> property and the
 	animation uses a valid @keyframes rule. Once an
 	animation has started it continues until it ends or the <a class=property data-link-type=propdesc href=#propdef-animation-name title=animation-name>animation-name</a> is
-	removed. The values used for the keyframes and animation properties are
-	snapshotted at the time the animation starts. Changing them during the
-	execution of the animation has no effect. Note also that changing the value
+	removed. Changing the values of the animation properties while the animation
+	is running has no effect on the amount of time elapsed since the animation
+	started running i.e. once the animation is running, updates to <a class=property data-link-type=propdesc href=#propdef-animation-delay title=animation-delay>animation-delay</a>
+	have no effect. The remainder of the animation runs according to the new
+	animation property values.
+
+<p>	Note also that changing the value
 	of <a class=property data-link-type=propdesc href=#propdef-animation-name title=animation-name>animation-name</a> does not necessarily restart an animation (e.g., if a list
 	of animations are applied and one is removed from the list, only that animation
 	will stop; The other animations will continue). In order to restart an animation,