
plpsty: Select area fill pattern 

DESCRIPTION:

    This function is used in examples 12,13,15,16,25. 

SYNOPSIS:

plpsty(patt)

ARGUMENTS:

    patt (PLINT, input) :    The desired pattern. Pattern 1 consists of
    horizontal lines, pattern 2 consists of vertical lines, pattern 3
    consists of lines at 45 degrees angle (upward), and so on. 
