Brother HL-2170W - Manual (Page 159)

CHAPTER 4 HP-GL/2 - 8
3.10.
Absolute and Relative Plotting
Drawing commands are of two distinct types: absolute commands, in which the coordinates specified are
the absolute user or graphics coordinates and relative commands, whose coordinates are relative to the
coordinate position at which the previous graphics command terminated.
3.11. Fills
You can fill in the shapes you have drawn with the plotting commands by using the fill commands. A
number of different shading options are available.