plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.2"?>
<plugin>
   <extension
         point="org.eclipse.ui.actionSets">
      <actionSet
            id="OpenExplorer.actionSet"
            label="OpenExplorer Action Set"
            visible="true">
         <action
               class="openexplorer.actions.OpenExplorerAction"
               icon="icons/OpenExplorer.png"
               id="openexplorer.actions.OpenExplorer"
               label="&amp;OpenExplorer Action"
               toolbarPath="OpenExplorer"
               tooltip="Open Explorer">
         </action>
      </actionSet>
   </extension>
   <extension
         point="org.eclipse.ui.popupMenus">
         <objectContribution
            objectClass="org.eclipse.core.runtime.IAdaptable"
            id="OpenExplorer.popupMenuContribution">
         <action
               label="Open Explorer"
               icon="icons/OpenExplorer.png"
               class="openexplorer.actions.OpenExplorerPopupAction"
               menubarPath="additions"
               enablesFor="*"
               id="OpenExplorer.popupMenuAction">
         </action>
      </objectContribution>
   </extension>
   <extension
         point="org.eclipse.ui.preferencePages">
      <page
            name="Open Explorer"
            class="openexplorer.preferences.HomePreferencePage"
            id="openexplorer.preferences.HomePreferencePage">
      </page>
      <page
            id="openexplorer.preferences.FMPreferencePage"
            class="openexplorer.preferences.FMPreferencePage"
            name="File Manager"
            category="openexplorer.preferences.HomePreferencePage">
      </page>
   </extension>
   <extension
         point="org.eclipse.core.runtime.preferences">
      <initializer
            class="openexplorer.preferences.PreferenceInitializer">
      </initializer>
   </extension>
</plugin>