This demo illustrates how to create a document-based application with ProjectManager. I hope you'll find it any useful. Oh and, of course, feel free to send any questions and/or suggestions to diablos -at- manga -dot- sk or contact me on Jabber: diablos@jabber.sk.
Errata 2: The app-layout diagram chart's left-most square should say 'AppController' instead of 'AppDelegate'.
You may download the example TextEditor application's source codes. I release it under the GNU GPL v2 or any later.
You can also download the diagram charts with the app-layout: