makeDimerCluster(d = a, phi = pi/4, psi = 0, a = 0.035,
b = 0.012, c = b, right = TRUE)clust.equalangles,
clust.equalsizes, helix,
helix.zt, makeDimerDihedral,
makeHelixCluster,
makeHelixCluster.zt,
makeRodChain,
makeSpheresCluster