set clip xlo xhi ylo yhi
This command sets the coordinates for clipping the plot area for
display and draw commands. The four arguments xlo, xhi, ylo,
yhi are the clipping coordinates in real page inches.
set parea command.
set clip overrides this default.
display command is
executed, GrADS sets the clipping area to the region specified by set parea or set
clip, draws the graphic, then resets the clipping region to the
entire page.
clear or display.