HP QMS 4060 - Manual (Page 101)

Emulations
4-67 Printer Configuration
Paper Type
Identifies the original image’s paper size.
Default Off
Notes The available range of plotter units for a particular
paper size is only partially determined by setting the
Expand Mode to On. When the printer/plotter senses
the paper size it automatically sets the hard clip limit
to 15mm on three sides and 39 mm on the fourth. If
Expand Mode is On, then the hard clip limits are set
to 5mm on three sides and 29 mm on the fourth side.
This is what allows you to define a larger imageable
area.
The HP-GL emulation senses the paper type if the
paper type is set to Scale to Paper. It is also possible
to have the HP-GL emulation use a particular paper
size by setting Original Paper Type through the
control panel or by using a Document Option
Command.
Menu Administration/Emulations/HPGL/Paper Type