The pages are organised using namespaces. Every type document has his own namespace and therefore, grouping is much more easy.
You can use the following formula to create new content. Just specify title, type of document and category. This will create a new document in the corresponding namespace with a default template text.
All content can be edited by any registered user by default. If you want to protect some data, for example of your own plugin, you can restrict these modification by sending a email to Andreas dot Jahnen at list dot lu.