Bill P., are you there?

Last week I sent a private note to Bill Powers asking for
          some details about the ARM1 simulation. As I have not yet
          received a reply, I'm beginning to think that perhaps my
          message did not get through, so I will repeat part of it
          here. Within the subroutines that compute the output of a
          given control mechanism (e.g., azimuth1), you employ a
          temporary variable, which is set to its previous value
          plus the computed change. This variable is not initialized
          within the routine itself. When is this done and to what
          value?

          Bruce