3.10. Absolute and Relative Plotting; 3.11. Fills; Fills - Page 164

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.