Wasn't there a program (I think it was from TI Calc) that let you edit-lock selected programs? I thought I saw it a few months ago, but I never downloaded it. >As far as I know, the only way to do it is to load the prog onto the PC, >open it in TI-Graph Link software, and there is a little box in the lower >left that says 'Protected'. Click that and you can't edit the code.