Terminology; Picture Frame; Anchor Point; Graphics Window - Brother HL-1050 Technical Reference Manual

3.

TERMINOLOGY

3.1.

Picture Frame

The printer frame is the rectangular area of the page on which graphic output can be printed.
on the logical page defined for the selected paper size.
3.2.

Anchor Point

The anchor point of the picture frame is the top left hand corner of the frame.
page using PCL language page control commands.
3.3.

Graphics Window

The graphics window is the rectangular area of the page on which you can generate graphic output using
HP-GL/2 commands.
using the HP-GL/2 IW command.
3.4.

Hard Clip Limits

Hard clip limits are the physical restrictions which define where printed output can appear on a page.
3.5.

Soft Clip Limits

Soft clip limits are the user-defined restrictions which define where printed output can appear on a page.
3.6.

Graphics Units

The initial coordinate system employs units of 1/1016" in both the x- and y-axes.
3.7.

User Units

The HP-GL/2 graphics language uses a coordinate system.
on this system using the SC command.
3.8.

Current Units

The units in use at a given time are called the current units.
units, depending on whether scaling has been turned on or not.
on, that is,
3.9.

Pens

By convention, certain HP-GL/2 graphics language commands are thought of as using a pen,
be either up or down.
page without producing output the pen must be in the up position.
to specify the pen position before you use them, others have implied pen positions built into them,
you do not need to specify "Pen up" or "Pen down".
Initially the graphics window is the same as the picture frame but may be altered
to make user units the current units.
To produce plotted output the pen must be down.
CHAPTER 4 HP-GL/2 - 7
This can be moved on the
You can impose your own x- and y-scale units
Current units are either user units or graphics
The SC command is used to turn scaling
To move to a location on the
Some HP-GL/2 commands require you
2/19/04
This is based
which can
so that