xfpoly - fill a polygon
xfpoly fills a polygon with the current color. If close is equal to 1 a point is added to the polyline xv,yv to define a polygon.
x=sin(2*%pi*(0:5)/5);
y=cos(2*%pi*(0:5)/5);
plot2d(0,0,-1,"010"," ",[-2,-2,2,2])
xset("color",5)
xfpoly(x,y)
xset("default")