Ok, but I don't think you could have doublebinding in a ti-basic game, because you can't(thats what I think) press two keys at the same time having the same 'job'. For example pressing j and k on the calc at the same time,in a basic game would't have any effect.
Yeah I know, it would have to be either in Axe, ASM or use Celtic III/DCS (which allows BASIC games to have multiple keypresses)