HP PCL/PJL reference (PCL 5 Printer Language) - Technical Reference Manual Part I

EN Rectangular Area Fill Examples 14-15
3 Specify the height of the rectangle:
E
C
*c1500B
This sets the rectangle to 1500 PCL Units (5 inches at 300
units-per-inch).
4 Specify the Pattern ID:
E
C
*c25G
This sets the Pattern ID to 25.
1 Print the rectangular shaded area:
E
C
*c2P
This example prints the following:
Figure 14-5 Shaded Fill Example