hi there,

probably as a holdover from the ipaq port,
rio listens for button 6 and sends it to the keyboard set with the arguments.
bitsy/keyboard uses this to show/hide itself.

this is useful to me to toggle the keyboard when i am using my thinkpad x41t in tablet mode.
i have patched devmouse to let button 6 through and kbdfs to let it be bound to a key in the kbmap.
i hope this is useful to the small subset of 9front users with tablet/touchscreen devices.

thanks
- james