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

EN PJL Command Syntax and Format 2-3
The following illustration is an example of a PJL command line
containing the ENTER command:
The table below lists the control codes and special identifiers used in
this manual:
<HT> Horizontal tab character (ASCII 9).
<LF> Line feed character (ASCII 10).
<CR> Carriage return character (ASCII 13).
<SP> Space character (ASCII 32).
<ESC> Escape character (ASCII 27).
<FF> Form feed character (ASCII 12).
<WS> White space, a result of one or more <SP>
or <HT>.
<words> Printable characters (Roman-8 characters 33
through 255) and <WS>, starting with a printable
character.
^D PostScript end-of-file indication. It is not part of
PJL, but is used to end PostScript examples.