A graphics port.
A description sequence.
graphics-state parameters passed as keyword arguments.
function draws a polygon using alternating
values in the
argument as the vertices. When
the edge from the last vertex to the first to be drawn. When
a filled, closed polygon is drawn; the
argument is ignored if
transform, foreground, background, operation, thickness, scale-thickness, dashed, dash, line-end-style, line-joint-style , mask , shape-mode and compositing-mode from port 's graphics-state are all used, unless overridden in args . Additionally on Unix only, stipple and pattern are used.
CAPI Reference Manual - 15 Dec 2011