(Note, again, the "Important Files" node in the Projects window above. How cool is that?! In previous blog entries I complained about not being able to access build.xml and manifest.mf in the Projects window. I seem to have not been the only person with that problem!)
By the way, the NetBeans Platform Project homepage has been completely reworked and now gathers everything currently available on plug-ins and rich client development. It provides links to NetBeans sources, Javadoc, mailing lists, articles, tutorials, FAQ, and everything else currently available in this area.