% squareanglines.mp % L. Nobre G. % 2002 input featpost3Dplus2D; beginfig(1); cartaxes(1,1,1); squareangline( red, green, black, 0.4); squareangline( green, blue, black, 0.6); squareangline( blue, red, black, 0.8); endfig; end.