; Draws a half circle on each side of an n-sided polygon ; without drawing the sides of the polygon. ; nell arc2.nll START 3 | nellsvg 2.5 2.3 in 0.02 1 > arc2.svg n = 5; a = 2*pi/n; T1 : L(1) T(pi/2); T2 : [M(0.5) T(-pi/2) R(0.5,0.5,-pi/2,pi)] M(1) T(a); START : P(0.75,0.5) S(T2,n);