The file povuser.txt, which contains the text version of the POV-Ray user documentation and is distributed with the official version of POV-Ray, is missing from the povray RPM on the Power Tools CD. This file describes the scene description language; the manual page (which you do distribute) does not much more than describe the command-line options.
Thanks for the heads up. I'll fix this for the next release.
I have rebuilt the package and it should show up in rawhide the next time rawhide is updated. The requested (missing) documentation is now included. Tim