Here are some links to external Clanavi documentation. These documents pertain mostly to the D6 version of Clanavi
Clanavi at DrupalCon Copenhagen 2010
http://www.slideshare.net/yasnaoi/how-to-manage-your-cloud-by-drupal-dru...
Clanavi at BADCamp 2010
http://www.slideshare.net/yasnaoi/how-to-manage-your-cloud-by-drupal
Doxygen Guide for Drupal 6 codebase
http://docs.clanavi.org/