[css-animations] Reword findRule/deleteRule key argument description; list may include from/to

Author: Sylvain Galineau

css-animations/Overview.bs

@@ -993,7 +993,7 @@ The <code>deleteRule</code> method</h4>
 
 		<dt><dfn argument for="CSSKeyframesRule/deleteRule()">key</dfn> of type <a interface>DOMString</a>
 		<dd>
-			The keyframe selector of the rule to be deleted. Either a list of one ore more percentage values between 0% and 100%, separated by commas; or one of the keywords ''from'' or ''to'' which resolve to 0% and 100%, respectively.
+			The keyframe selector of the rule to be deleted: a comma-separated list of either percentage values between 0% and 100% or one of the keywords ''from'' or ''to'', which resolve to 0% and 100%, respectively.
 
             The number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s).  The match is not sensitive to white-space.
 	</dl>
@@ -1016,7 +1016,7 @@ The <code>findRule</code> method</h4>
 	<dl>
 		<dt><dfn argument for="CSSKeyframesRule/findRule()">key</dfn> of type <a interface>DOMString</a>
 		<dd>
-			The keyframe selector of the rule to be retrieved. Either a list of one ore more percentage values between 0% and 100%, separated by commas; or one of the keywords ''from'' or ''to'' which resolve to 0% and 100%, respectively.
+			The keyframe selector of the rule to be retrieved: a comma-separated list of either percentage values between 0% and 100% or one of the keywords ''from'' or ''to'', which resolve to 0% and 100%, respectively.
 
             The number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s). The match is not sensitive to white-space.
     </dl>

css-animations/Overview.html

@@ -1008,9 +1008,9 @@ <h4 class="heading settled heading" data-level=6.3.4 id=interface-csskeyframesru
 
 		<dt><dfn class=idl-code data-dfn-for=CSSKeyframesRule/deleteRule() data-dfn-type=argument data-export="" id=dom-csskeyframesruledeleterule-key>key<a class=self-link href=#dom-csskeyframesruledeleterule-key></a></dfn> of type <a class=idl-code data-link-type=interface title=domstring>DOMString</a>
 		<dd>
-			The keyframe selector of the rule to be deleted. Either a list of one ore more percentage values between 0% and 100%, separated by commas; or one of the keywords <span class=css data-link-type=maybe title=from>from</span> or <span class=css data-link-type=maybe title=to>to</span> which resolve to 0% and 100%, respectively.
+			The keyframe selector of the rule to be deleted: a comma-separated list of either percentage values between 0% and 100% or one of the keywords <span class=css data-link-type=maybe title=from>from</span> or <span class=css data-link-type=maybe title=to>to</span>, which resolve to 0% and 100%, respectively.
 
-<p>            The number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s).  
+<p>            The number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s).  The match is not sensitive to white-space.
 	</dl>
 
 <p>	No Return Value
@@ -1031,9 +1031,9 @@ <h4 class="heading settled heading" data-level=6.3.5 id=interface-csskeyframesru
 	<dl>
 		<dt><dfn class=idl-code data-dfn-for=CSSKeyframesRule/findRule() data-dfn-type=argument data-export="" id=dom-csskeyframesrulefindrule-key>key<a class=self-link href=#dom-csskeyframesrulefindrule-key></a></dfn> of type <a class=idl-code data-link-type=interface title=domstring>DOMString</a>
 		<dd>
-			The keyframe selector of the rule to be retrieved. Either a list of one ore more percentage values between 0% and 100%, separated by commas; or one of the keywords <span class=css data-link-type=maybe title=from>from</span> or <span class=css data-link-type=maybe title=to>to</span> which resolve to 0% and 100%, respectively.
+			The keyframe selector of the rule to be retrieved: a comma-separated list of either percentage values between 0% and 100% or one of the keywords <span class=css data-link-type=maybe title=from>from</span> or <span class=css data-link-type=maybe title=to>to</span>, which resolve to 0% and 100%, respectively.
 
-<p>            The number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s).
+<p>            The number and order of the values in the specified keyframe selector must match those of the targeted keyframe rule(s). The match is not sensitive to white-space.
     </dl>
 
 <p>	Return Value: