The HPOS= graphics option
overrides the values of the LCOLS or PCOLS device parameters and temporarily
sets the number of columns in the graphics output area. HPOS= does
not affect the width of the graphics output area but merely divides
it into columns. Therefore, you can use HPOS= to control cell width.
The values specified
in the HPOS= and VPOS= graphics options determine the size of a character
cell for the graphics output area and consequently the size of many
graphics elements, such as device–resident text. The larger
the size of the HPOS= and VPOS= values, the smaller the size of each
character cell.