Font Id Command; Example - HP PCL 5 Reference Manual

Font ID Command

The Font ID command is used to specify an ID number for use in
subsequent font management commands. The ID number of a font
can be used to select the font for printing (refer to "Font Selection by
ID" in Chapter 8).
Default = 0
Range = 0 - 32767
The font ID number is used during subsequent soft font downloads,
selections or deletions.
The factory default font ID is 0 (if no Font ID command is sent, an ID
of 0 is assigned).
Note
The font number assigned by the printer and used from the printer's
control panel is not the same as the ID number assigned using the
Font ID Command.

Example

To specify a font ID number of 1, send:
9-4 Font Management
E
*c#D
C
# = ID number
E
*c1D
C
EN