D-2 Printer Commands  
EN
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.
Figure D-1 displays the elements of a typical printer command (in 
this instance, a command for page orientation).
 
Figure D-1   Printer Command Elements
Lowercase l: l Uppercase O: O
Number one: 1 Number 0: 0