GEMSET10 is a version of MXSET by Simon J. Ewins set up for a Gemini-10 printer. The following has been done - 1. Home printhead command removed. 2. Carriage return and linefeed not sent to printer after commands. 3. Proportional spacing command added. 4. 12 cpi command added. 5. Start column command added. 6. Lines per inch command added. 7. Formfeed command added. 8. Optional printer status checking added. 9. Header line position command added. 10. Eliminated stack imbalance and improper use of PRINT##.