How can I get information about undocumented functions (like comet) in MATLAB?
Most things in the /demos directory are not described in the MATLAB User’s Guide. There are lots of goodies there. In 4.0, the demos are the best place to see examples of Handle Graphics. There are other undocumented functions in directories other than /demos. Some of them are “worker” functions that are unlikely to be used directly; they are simply called by other functions. A few, like comet and comet3, were written after the MATLAB User’s Guide was sent to the printer.