## {3,7}, diamond 1S + diamond 1R + diamond 1A2
h2.
angleunit(2*pi/7)
# the line below lets us specify internal angles
angleofs(pi)
distunit(edge(3,7))
unittile(1,2,1,2)
unittile(1,2,1,2)
unittile(1,2,1,2)
unittile(1,2,1,2)
# the Conway notation
conway("(0 1')(2 3')(1 2''')(3 0''')(0' 0'')(2' 0'')(3''' 1'')(1''' 1'')(2'' 3'')")
sublines(1)