source $drc_test_source
target $drc_test_target
deep
l1 = input(1, 0)
l1.output(1, 0)
l1.edges.space(0.4, projection).output(100, 0)
l1.edges.space(0.9, projection).output(101, 0)
l1.edges.space(1.1, projection).output(102, 0)