SETPATTERN number or list
SETPATTERN select a fill pattern for fill operations. The PATTERN command outputs the number of the currently selected fill pattern.
The available fill pattern are:If SETPATTERN is called with a list of eight numbers between 0 and 255, this list is treated as an 8x8 bit pattern to used for fill operations.
Example? SETPATTERN 8
? (STAMPRECT 50 30 "TRUE)