yakindu/org.eclipselabs.mscript/plugins/org.eclipselabs.mscript.common.ui/plugin.xml

<?xml version="1.0" encoding="UTF-8"?>
<?eclipse version="3.4"?>
<plugin>
   <extension point="org.eclipse.ui.newWizards">
      <category
            id="org.eclipselabs.mscript.common.ui.mscriptCategory"
            name="Mscript"/>
   </extension>

</plugin>