Document samples for sisu processing are contained in the sub-directories
* ./dfsg
* ./sisu_manual
and if it exists
* ./non-free

DFSG stands for Debian Free Software Guidelines.

* sample documents in the dfsg directory should comply with the guidelines.

* the SiSU manual has (for convenience) been placed in a separate sub-directory
  of its own, the license for these is GPL 3

* the non-free directory if it exists contains document samples that do not or
  may not comply with the DFSG.