HP PCL/PJL reference - Printer Job Language Technical Reference Manual

EN PJL Command Syntax and Format 2-5
[LPARM : personality]|[IPARM : port] variable = value [<CR>] <LF>,
you can use either the LPARM command modifier or the IPARM
command modifier, but not both.
[option name [ = value ] ] — The option parameter specifies an
option or sets a command option to a certain value. Examples include
“@PJL INQUIRE COPIES” and “@PJL ENTER LANGUAGE =
personality.” The range of values varies with each specific command
and each printer model. A PJL command may have no options, or one
or more options (an unlimited number).
The DEFAULT command shown below illustrates format number 4.
The command sets the default PCL point size to 14.25.
PJL Syntax Rules
Following are the rules governing the use of PJL commands:
• The PJL prefix “@PJL” always must be uppercase. The
remainder of the PJL command is not case-sensitive. For
clarity, however, this manual shows other portions of PJL
commands in uppercase to indicate portions that are not
variable and that should be typed as shown (such as the first
three words in the following command):
@PJL STMSG DISPLAY = "message" [<CR>]<LF>
• Spacing between characters, or “white space,” is comprised of
one or more of either the space character (ASCII 32) or the
horizontal tab character (ASCII 9). For clarity and consistency,
this manual shows all white space as one blank space.