HP LaserJet 8000 Multifunction Printer series - Manual (Page 323)

Appendix D Printer Commands 323
Understanding PCL Printer Command Syntax
Understanding PCL Printer Command Syntax
Before using printer commands, compare these characters:
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.
Lowercase l: l Uppercase O: O
Number one: 1 Number 0: 0
Escape character
(begins escape sequence)
Value field (contains both
alpha and numeric characters)
Termination character
(uppercase) Group
character Parameterized
character