Dial plots of the development of proline kink angles during a simulation. The simulation time proceeds radially from the center of each dial. For the definition of the angles, see ( I. Visiers, B.B. Braunheim, and H. Weinstein, Prokink: a protocol for numerical evaluation of helix distortions by proline. Prot. Engrg., 13, 603-606 (2000). )