In the last issue, we explored several techniques for transmitting printer control commands from an IBM PC/XT or M300 Workstation to the system printer. These commands are simply sequences of characters that turn special print modes—compressed, emphasized, etc.,—on and off. Recently, an additional technique, which works on Epson, IBM, and Epson‐compatible dot matrix printers, has come to light. If you have some other type of printer, you may also want to try it to see what happens.