Add some more elements to the list of things that are always flexbox items.

Author: tabatkins

css3-flexbox/Overview.html

@@ -581,12 +581,13 @@ <h2 id=flex-items><span class=secno>4. </span> Flexbox Items</h2>
     <code>&lt;svg></code>, <code>&lt;math></code>, <code>&lt;audio></code>,
     <code>&lt;video></code>, <code>&lt;iframe></code>,
     <code>&lt;object></code>, <code>&lt;embed></code>,
-    <code>&lt;input></code>, <code>&lt;button></code>,
-    <code>&lt;select></code>, or <code>&lt;textarea></code> element. <span
-    class=note>Note: In other words, any element that is "intended to be" a
-    replaced element, even if it becomes non-replaced (like an
-    <code>&lt;img></code> that doesn't load and is replaced by its alt
-    text.)</span>
+    <code>&lt;applet></code>, <code>&lt;progress></code>,
+    <code>&lt;meter></code>, <code>&lt;input></code>,
+    <code>&lt;button></code>, <code>&lt;select></code>, or
+    <code>&lt;textarea></code> element. <span class=note>Note: In other
+    words, any element that is "intended to be" a replaced element, even if
+    it becomes non-replaced (like an <code>&lt;object></code> that doesn't
+    load and is replaced by its contents).</span>
 
    <li> An anonymous block element wrapped around a contiguous run of
     non-replaced inline child elements. However, if the contents of the

css3-flexbox/Overview.src.html

@@ -289,11 +289,14 @@ <h2 id='flex-items'>
 			<code>&lt;iframe></code>, 
 			<code>&lt;object></code>,
 			<code>&lt;embed></code>,
+			<code>&lt;applet></code>,
+			<code>&lt;progress></code>,
+			<code>&lt;meter></code>,
 			<code>&lt;input></code>,
 			<code>&lt;button></code>,
 			<code>&lt;select></code>,
 			or <code>&lt;textarea></code> element.
-			<span class='note'>Note: In other words, any element that is "intended to be" a replaced element, even if it becomes non-replaced (like an <code>&lt;img></code> that doesn't load and is replaced by its alt text.)</span>
+			<span class='note'>Note: In other words, any element that is "intended to be" a replaced element, even if it becomes non-replaced (like an <code>&lt;object></code> that doesn't load and is replaced by its contents).</span>
 
 		<li>
 			An anonymous block element wrapped around a contiguous run of non-replaced inline child elements.