Added explanatory note to element() that the layout mustn't change if the element is regenerated for display.

Changed a "who's" to "whose".

Author: tabatkins

css3-images/Overview.html

@@ -15,7 +15,7 @@
 
    <h1>CSS Image Values and Replaced Content Module Level 3</h1>
 
-   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 26 April 2011</h2>
+   <h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 2 May 2011</h2>
 
    <dl>
     <dt>Latest Version:
@@ -492,7 +492,7 @@ <h3 id=element-reference><span class=secno>4.3. </span> Using Elements as
   <p>If the argument to the &lsquo;<code class=css>element()</code>&rsquo;
    function is an ID selector, the function references the element matched by
    the selector. If it's an identifier, the function references the element
-   who's <dfn id=css-element-reference-identifier>CSS element reference
+   whose <dfn id=css-element-reference-identifier>CSS element reference
    identifier</dfn> is the given identifier. (CSS does not define how an
    element acquires a <a href="#css-element-reference-identifier"><i>CSS
    element reference identifier</i></a>; that is determined by the host
@@ -525,6 +525,14 @@ <h3 id=element-reference><span class=secno>4.3. </span> Using Elements as
   <p>If the argument passed to &lsquo;<code class=css>element()</code>&rsquo;
    isn't an ID selector or an ident, it is a syntax error.
 
+  <p>Implementations may either re-use existing bitmap data generated for the
+   referenced element or regenerate the display of the element to maximize
+   quality at the image's size (for example, if the implementation detects
+   that the referenced element is an SVG fragment); in the latter case, the
+   layout of the referenced element in the image must not be changed by the
+   regeneration process. That is, the image must look identical to the
+   referenced element, modulo rasterization quality.
+
   <div class=example> TODO: copy an example from the MozHacks article</div>
   <!-- ====================================================================== -->
 

css3-images/Overview.src.html

@@ -281,7 +281,7 @@ <h3 id='element-reference'>
 
 	<p>If the argument to the ''element()'' function is an ID selector, the 
 	function references the element matched by the selector.  If it's an identifier, 
-	the function references the element who's <dfn>CSS element reference identifier</dfn> 
+	the function references the element whose <dfn>CSS element reference identifier</dfn> 
 	is the given identifier.  (CSS does not define how an element acquires a 
 	<i>CSS element reference identifier</i>; that is determined by the host language.)  
 	If no element in the document matches the selector, or no element has the 
@@ -309,6 +309,14 @@ <h3 id='element-reference'>
 	<p>If the argument passed to ''element()'' isn't an ID selector or an ident, 
 	it is a syntax error.</p>
 
+	<p>Implementations may either re-use existing bitmap data generated for the 
+	referenced element or regenerate the display of the element to maximize quality 
+	at the image's size (for example, if the implementation detects that the referenced 
+	element is an SVG fragment); in the latter case, the layout of the referenced 
+	element in the image must not be changed by the regeneration process.  That is, 
+	the image must look identical to the referenced element, modulo rasterization 
+	quality.</p>
+
 	<div class=example>
 		TODO: copy an example from the MozHacks article
 	</div>