Command mode:

Command mode allows one to use their PC keyboard to control the TI
calculator.  I have attempted to map the keys to generally useful
values, which are assigned in keymaps.c.

The comments in keymaps.c are probably the best place to look to find
out what's defined as what, I don't really feel like repeating it
here...

If you get in, and just want to leave again, press alt-shift-q.

