FKEYS.100 DOCUMENTATION M100 Specific as is (line #60 has Calls for Default Function Key Set Up). I'm not familiar with the 102, 200, or 600, but would think the program will work if proper calls are placed in this line - or just delete line #60 & enter any other key set up you desire. Originally, I used one set for arithmatic symbs,i.e., * / + - etc. Please customize to your needs. This program just enables the Function Keys & has no bearing on Operating Systems (TDD, MUNK, CAS, etc) Re: menu option #3 - the F1, F2, & F6 keys are the same for Powr-Disk or Powr-Dos. All Powr-Disk & Powr-Dos key functions (menu #1 & #3 are in UPPER CASE) when 'Label' key is engaged. To make any changes see: Menu #1 - Lines 50,51,52 (can be squeezed into one line) Menu #2 - Line 60 (M100 Default) Menu #3 - Line 70,71,72,73 (can be aqueezed into one line) CKSUM = 44,610 72216,512