Emulations User guide140What are escapesequences?An escape sequence consists of an ESCape control character (ESC= decimal 27 or hexadecimal 1B) followed by one or more charac-ters, which represent commands to the printer. Please note that thisescape character has nothing to do with the ESC key on your com-puter keyboard.For example, the control character ESC followed by the character“4” tells your printer to print the subsequent text in italics.MTPL sequences Apart from the Escape sequences and control codes your printer isequipped with MTPL sequences. These sequences provide a largenumber of additional ways to control your printer. Many functionscan only be carried out using the MTPL sequences as you will seewhen you look at the list of available command codes.Control codes Control codes give simple instructions to the printer to do a specificfunction. Unlike escape sequences, control codes do not begin withthe ESC control code. Instead, they consist of special single-charac-ter non-printing commands (e.g. LF, FF, DC2).The $$ procedure Most of the printer functions can be selected with control sequences(ESC sequences). For this purpose, the signal character ESC, fol-lowed by the specific sequence must be transmitted from the com-puter to the printer.The printer replaces $$ characters in the data stream with ESC(hex. 1B) if the parameter Escape=ESC+$$ is selected in the printermenu.Example: In the MTPL + IBM Proprinter emulation, bold print can be switchedon by the sequence E and can be switched off with the se-quence F.This procedure is significant when you are working with oldertext programs that do not have any or an inadequate printerdriver. It is also possible to insert ESC sequences in normalASCII texts (e.g. program listings) with this procedure. Thefunction of the ESC character remains unaffected.Input Highlight the word $$E Printer $$F with bold printOutput Highlight the word Printer with bold print
