Improve Documentation of "Appearance" Preference Page

- Remove preference "Enable Animations" as it's no longer available
- Add missing preferences

eclipse.platform.common/bundles/org.eclipse.platform.doc.user/reference/ref-16.htm

@@ -21,20 +21,38 @@ <h1 class="Head">Appearance</h1>
       <th>Description</th>
       <th>Default</th>
     </tr>
+    <tr valign="top">
+      <td><b>Enable Theming</b></td>
+      <td>Specify whether theming of the user interface should be enabled. If disabled the usage 
+          interface will only use operating system look and feel.</td>
+      <td>Enabled</td>
+    </tr>
     <tr valign="top">
       <td><b>Theme</b></td>
-      <td>Specify the currently active theme (look and feel).</td>
+      <td>Specify the currently active theme (look and feel). This setting is only available if 
+          <em>&quot;Enable Theming&quot;</em> is enabled.</td>
       <td>Dependent on the operating system</td>
     </tr>
     <tr valign="top">
-      <td><b>Enable animations</b></td>
-      <td>Specify if the animations should be enabled</td>
+      <td><b>Color And Font Theme</b></td>
+      <td>Set this to <em>&quot;Reduced Palette&quot;</em> to reduce the amoung of different colors 
+          used and to increase contrast. This setting is only available if <em>&quot;Enable Theming&quot;</em> is enabled.</td>
+      <td>Dependent on the operating system</td>
+    </tr>
+    <tr valign="top">
+      <td><b>Use round tabs</b></td>
+      <td>Specify whether the corner of the tabs should be rounded.</td>
       <td>Disabled</td>
     </tr>
     <tr valign="top">
       <td><b>Use mixed fonts and colors for labels</b></td>
-      <td>Specify if the fonts and colors for labels should be mixed</td>
-      <td>Fonts and colors should be mixed</td>
+      <td>Specify if the views should utilize colored labels.</td>
+      <td>Enabled</td>
+    </tr>
+    <tr valign="top">
+      <td><b>Show most recently used tabs</b></td>
+      <td>Specifies whether the list of tabs should be sorted in the order in which they are most recently used.</td>
+      <td>Enabled</td>
     </tr>
   </table>
 </body>