This control enables codes X'80' through X'9F' from the active character set tobecome printable characters instead of control characters.Cancel Printable Code Area Expansion (ESC 7)1B 37This control cancels Printable Code Area Expansion (ESC 6).Copy ROM into Ram (ESC : NUL)1B 3A 00 00 00This control copies the characters in ROM into RAM. Specific characters may beredefined.Select Unidirectional Mode (one line only) (ESC <)1B 3CThis control selects unidirectional printing from left to right for one line only. ESC <is cancelled by a Carriage Return. The printhead begins the line at the Homeposition, prints to the end of the line, then is cancelled by the CR that returns theprinthead to Home.Set MSB to 0 (ESC =)1B 3DThis control sets the most significant bit (MSB) of all incoming data to 0. The MSBis bit 7. This control only affects text and control code data. This control can preventthe problem of some system applications that always send data with the MSB set to1, which results in italic or graphics printing in Epson printers.Set MSB to 1 (ESC >)1B 3EThis control sets the most significant bit (MSB) of all incoming data to 1. The MSBis 7. This control only affects text and control code data.Reassign Graphics Mode (ESC ?)1B 3F S NNThis control reassigns a graphics command (ESC K, ESC L, ESC Y, or ESC Z) to adifferent mode (K, L, Y, or Z).OptionAlternateCode NNHorizontalDensity(dots/in.)Single-Density ESC K 0 60Double-Density ESC L 1 120High-Speed Double-Density * ESC Y 2 120232 4247 Printer Model A00 User’s Guide