HP 4000n HP LaserJet 4000 Printer Series - HP LaserJet 4000, 4000 T, 4000 N, a - Page 167
Understanding PCL Printer Command, Syntax, Uppercase O
UPC - 008869819917
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Understanding PCL Printer Command Syntax Before using printer commands, compare these characters: Lowercase l: l Number one: 1 Uppercase O: O Number 0: 0 Many printer commands use the lowercase letter l (l) and the number one (1), or the uppercase letter O (O) and the number zero (0). These characters may not appear on your screen as shown here. You must use the exact character and case specified for PCL printer commands. Figure D-1 displays the elements of a typical printer command (in this instance, a command for page orientation). Escape character (begins escape sequence) Value field (contains both alpha and numeric characters) Uppercase letter Category of command (terminates escape sequence) Figure D-1 Printer Command Elements D-2 Printer Commands EN