'webcam' in v4l-tools

There is the programm 'webcam' in the package of v4l-tools in the SuSE 7.3. But I can't find a documentation for this. Do somebody know a doc for 'webcam'. Or perhaps there is somebody who can answer these questions. When I type 'webcam' in my comandline, it's reading the configfile '/root/.webcamrc' but on the whole system there is no file like this. Which parameters do this file need? Are there examples? Which alternatives do I have by using only a textbased system? Stephan