Doxia allows you to write books like user manuals and guides in any format supported by Doxia. Combined with the Doxia Book Maven Plugin you are able to include the manuals directly in your generated site with links to the off-line friendly formats like XDoc, PDF, RTF and LaTeX.
How It Works
The only thing you need in addition to the content files itself is a simple book descriptor which is used to specify the ordering of the sections and the names for the chapters.
See the Book Descriptor Reference for a reference to the descriptor. A sample is given on the main Doxia site.