A simple manual page for Thunar should be written (DocBook).
Created attachment 497 First try
Debian will not include programs without first adding a manpage. They are not great about telling upstream (frankly they are useless) but if you go looking you might find the work already done for you.
Dunno if you checked the thunar diff, but the Debian manual page is - as usual - very short (6 lines).
Moving to 0.3.2beta2.
Moving to 0.4.0rc1.
Committed with revision 22971. 2006-09-01 Benedikt Meurer <benny@xfce.org> * docs/Thunar.xml, docs/Makefile.am: Add manual page for Thunar. Bug #1650.