Ok, so it's only documented in --help but not in man cpfind. To me the manual is usually supposed to be more complete than the help, so I use "man command" most often.
Currently there are 3 possible places:
* program --help
* man program -> only on Linux, but not on Windows
* help pages in the GUI
When I add new switches I always add it to the program --help output. This should be the up to date place.
The other 2 places may be out of date.
In case of the help pages you can help and edit these pages on the
wiki.panotools.org. They will then be update before a new release.
For the man pages, which are only available on Linux, updates from users are welcome. If you send a patch file with your proposed changes they can be easily incorporated.
Thomas