Fill in a Panel

USAGE:

panel.fill(...) 

ARGUMENTS:

...
graphical parameters may be supplied to control the filling.

SIDE EFFECTS:

The function calls polygon with the given arguments to fill in the background of a panel. If it appears in a panel function, panel.fill should ordinarily be the first thing called.
A panel that is filled in a color or gray can often be effective for displaying a grid or other graphical elements in the background color ( col=0 ).

EXAMPLES:

panel.fill(col=5)