plugins/org.polarsys.chess.properties.propertyEditor/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
     <extension
         point="org.eclipse.ui.views.properties.tabbed.propertyTabs">
      <propertyTabs
            contributorId="TreeOutlinePage">
         <propertyTab
               afterTab="advanced"
               category="Editors"
               id="CustomPropertyTab"
               label="PropertyEditor+">
         </propertyTab>       
      </propertyTabs>
   </extension>
   <extension
         point="org.eclipse.ui.views.properties.tabbed.propertySections">
      <propertySections
            contributorId="TreeOutlinePage">
         <propertySection
               class="org.polarsys.chess.properties.propertyEditor.CustomPropertyEditorTab"
               filter="org.polarsys.chess.properties.propertyEditor.PropertyEditorFilter"
               id="CustomPropertyEditorSection"
               tab="CustomPropertyTab">
         </propertySection>
      </propertySections>
   </extension>
   <extension
         point="org.eclipse.ui.views.properties.tabbed.propertyContributor">
      <propertyContributor
            contributorId="TreeOutlinePage">
         <propertyCategory
               category="Editors">
         </propertyCategory>
      </propertyContributor>
   </extension>

</plugin>