HP PCL/PJL reference - PCL 5 Comparison Guide

ENWW Printer-Specific Differences 2-27
Pixel Placement Command (HP-GL/2)
The Pixel Placement (PP) command controls how pixels are placed
on the layout grid during polygon fills. Two pixel placement modes are
grid intersection or grid centered.
PP [mode] ;
Pixel Placement Command (HP-GL/2)
mode
The command is the HP-GL/2 version of the PCL Pixel Placement
command. Whatever mode is selected, using the HP-GL/2 PP
command also applies to PCL operation. Likewise the PCL Pixel
Placement command also affects HP-GL/2 pixel placement.
Note Microsoft Windows fills polygons based on grid centered method.
This command determines how pixels will be placed for both HP-GL/2
and PCL operation.
The PP command is not defaulted by an IN command.
Parameter Format Functional Range Default
mode clamped integer 0 or 1 0 (grid intersection)
0 = grid intersection; device draws pixels centered at grid
intersections (see Figure 2-1).
1 = grid centered; device draws pixels centered inside the boxes
created by the grid (see Figure 2-1).