Clarify that image-resolution only applies to content images

Author: fantasai

css3-images/Overview.html

@@ -1685,7 +1685,7 @@ <h2 id=image-resolution><span class=secno>7. </span> Overriding Image
     <tr>
      <th>Applies to:
 
-     <td>replaced elements <span class=issue>and background images?</span>
+     <td>replaced elements
 
     <tr>
      <th>Inherited:
@@ -1705,7 +1705,9 @@ <h2 id=image-resolution><span class=secno>7. </span> Overriding Image
 
   <p>The &lsquo;<a href="#image-resolution0"><code
    class=property>image-resolution</code></a>&rsquo; property specifies the
-   resolution of images. Values have the following meanings:
+   resolution of images in content (i.e. replaced elements and generated
+   content). It has no effect on background images, list markers, and other
+   images that are not element content. Values have the following meanings:
 
   <dl>
    <dt>&lt;resolution>

css3-images/Overview.src.html

@@ -1274,7 +1274,7 @@ <h2 id="image-resolution">
 			<td>1dppx
 		<tr>
 			<th>Applies to:
-			<td>replaced elements <span class=issue>and background images?</span>
+			<td>replaced elements
 		<tr>
 			<th>Inherited:
 			<td>yes
@@ -1286,7 +1286,10 @@ <h2 id="image-resolution">
 			<td>specified value
 	</table>
 
-	<p>The 'image-resolution' property specifies the resolution of images.
+	<p>The 'image-resolution' property specifies the resolution of images
+	in content (i.e. replaced elements and generated content). It has no
+	effect on background images, list markers, and other images that are
+	not element content.
 	Values have the following meanings:</p>
 
 	<dl>