Lexmark C720 Technical Reference - Page 34
Command Structure, Control Codes, Commands
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2-22 PCL Command Structure This section introduces the different types of PCL emulation commands and their structure, or syntax. It also demonstrates how you can link commands to abbreviate them. Control Codes Control Codes are single-character instructions. Table 2-12: Control Codes Code Dec Hex Function Result BS 8 08 Backspace Moves the cursor toward the left margin one horizontal space equal to the last printed character HT 9 09 Horizontal Tab Moves the cursor to the next defined tab stop LF 10 0A Line Feed Advances the cursor to the same horizontal position on the following line as determined by either the Vertical Motion Index (VMI) or Set Line Spacing command FF 12 0C Form Feed Advances the cursor to the same horizontal position at the top margin of the next page CR 13 0D Carriage Return Moves the cursor to the left margin SP 32 20 Space Moves the cursor to the right one column SI 15 0F Primary Font Selects the primary font SO 14 0E Secondary Font Selects the secondary font Commands PCL commands are multibyte strings (also known as "escape sequences") that begin with the Escape control code (ESC, ←, decimal 27, or hexadecimal 1B). The ESC control code notifies the printer that the characters that follow are to be interpreted as part of a command and are not control codes or data to be printed.