size 400,400
xrange -10,10
yrange -10,10
bgcolor white
# to get nice click coordinates take invisible ''grid`` and use ''snaptogrid`` 
grid 1,1,white
snaptogrid
circles blue,0,0,2,1,1,5,5,5,4,-5,5,6,5,-5,6
userdraw gridfill,red
