inputtrap usage message


inputtrap usage message seems to me a bit outdated.
First, it sometimes uses %C instead of the program name.
Second, there’s no such directory /etc/config/trap, in which, as the
usage mentions the trap files are stored.
Third, it says, that ran without options inoutrap shows the command line
for devi-hirun. It does not.
inputtrap start requires Photon (already) runinng.

I need to start the mouse driver (and only the mouse driver, without
keyboard), but I have to auto-detect the mouse (PS/2 or serial).
How could I do this ?