Updated the serialization section.

Author: tabatkins

css3-images/Overview.html

@@ -1995,25 +1995,26 @@ <h3 id=serializing-image-notation><span class=secno>8.3. </span>
   <ol>
    <li>Append "image(" to s.
 
-   <li>For each argument, serialize the argument as an &lt;image-decl>,
-    &lt;color>, &lt;element-reference>, or &lt;gradient> as appropriate, and
-    append it to s. Then, if it is not the final argument, append a comma and
-    a space ", " to s.
+   <li>For each argument, serialize the argument as an &lt;image-decl> or
+    &lt;color> as appropriate, and append it to s. Then, if it is not the
+    final argument, append a comma and a space ", " to s.
 
    <li>Append a close parenthesis ")" to s.
   </ol>
 
   <p>To serialize an <a href="#ltimage-decl"><i>&lt;image-decl></i></a>:
 
   <ol>
-   <li>Serialize the first part of the value (the &lt;string> or
-    &lt;url-token>) as a string.
+   <li>Serialize the first part of the value (the &lt;string>) as a string.
 
    <li>If a &lt;resolution> was provided, append a space " " to s. Then
     serialize the &lt;resolution> and append it to s.
 
    <li>If the &lsquo;<code class=property>snap</code>&rsquo; keyword was
     provided, append a space " " and the literal string "snap" to s.
+
+   <li>If a directional keyword was provided, append a space " " to s, then
+    append the keyword to s.
   </ol>
   <!-- ====================================================================== -->
 
@@ -2194,7 +2195,7 @@ <h3 id=serializing-properties><span class=secno>8.7. </span> Serializing
    <li>If both the &lsquo;<code class=css>from-image</code>&rsquo; keyword
     and a &lt;resolution> are specified, append a space " " to s.
 
-   <li>If a &lt;resolution is specified, serialize it and append it to s.
+   <li>If a &lt;resolution> is specified, serialize it and append it to s.
   </ol>
 
   <p>To serialize the &lsquo;<a href="#image-orientation0"><code

css3-images/Overview.src.html

@@ -1525,23 +1525,26 @@ <h3 id='serializing-image-notation'>
 	<ol>
 		<li>Append "image(" to s.</li>
 
-		<li>For each argument, serialize the argument as an &lt;image-decl>, 
-		&lt;color>, &lt;element-reference>, or &lt;gradient> as appropriate, and 
-		append it to s.  Then, if it is not the final argument, append a comma 
-		and a space ", " to s.</li>
+		<li>For each argument, serialize the argument as an &lt;image-decl> or 
+		&lt;color> as appropriate, and  append it to s.  Then, if it is not the final 
+		argument, append a comma and a space ", " to s.</li>
 
 		<li>Append a close parenthesis ")" to s.</li>
 	</ol>
 
 	<p>To serialize an <i>&lt;image-decl></i>:</p>
 
 	<ol>
-		<li>Serialize the first part of the value (the &lt;string> or &lt;url-token>) 
-		as a string.</li>
+		<li>Serialize the first part of the value (the &lt;string>) as a string.</li>
+
 		<li>If a &lt;resolution> was provided, append a space " " to s.  Then 
 		serialize the &lt;resolution> and append it to s.</li>
+
 		<li>If the 'snap' keyword was provided, append a space " " and the literal 
 		string "snap" to s.</li>
+
+		<li>If a directional keyword was provided, append a space " " to s, then
+		append the keyword to s.</li>
 	</ol>
 
 <!-- ====================================================================== -->
@@ -1718,7 +1721,7 @@ <h3 id='serializing-properties'>
 		<li>If both the ''from-image'' keyword and a &lt;resolution> are specified, 
 		append a space " " to s.</li>
 
-		<li>If a &lt;resolution is specified, serialize it and append it to s.</li>
+		<li>If a &lt;resolution> is specified, serialize it and append it to s.</li>
 	</ol>
 
 	<p>To serialize the 'image-orientation' property:</p>