% solid black instead of gray; use with GF2DVI
mode=aps; sqsize=10;
%mode:=dover; sqsize:=5; % temporary!
edges pixelrep;
pixelrep=nulledges;
addto pixelrep contour
	((0,0)..(0,1)&(0,1)..(1,1)&(1,1)..(1,0)&(1,0)..(0,0)&cycle)
	scaled(4sqsize-4) shifted(2,2);
dotsize=4/5sqsize+1; rulethickness=cw/10;
boolean small; small=true;
input gray