HP LaserJet 9000 Printer series - Manual (Page 229)

D Printer commands 229
Understanding PCL 5e printer command syntax
Understanding PCL 5e 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 5e printer commands.
Lowercase L: l Uppercase O : O
Number one: 1 Number 0 : 0
Escape character
(begins escape sequence)
Value field (contains both
alphabetic and numeric characters)
Termination character
(uppercase) Group
character Parameterized
character