anchor.diff:            {rr_resolve,
              [
                {on, 2}, %% tries to send messages, needs valid state with pid
  -             {init, 1}, %% needs a pid in the state
                {start, 0} %% tries to spawn processes
              ],
              [
  
positive.code:           {rr_recon,
             [
               {on, 2}, %% tries to send messages, needs valid state with pid
               {init, 1}, %% needs a pid in the state
               {start, 2}, %% tries to spawn processes
               {map_interval, 2}, %% second interval must be in a single quadrant
  
  
negative.code:              {inform_rtms, 3}, %% tries to send
               {inform_tps, 3}, %% tries to send
               {send_to_rtms, 2}, %% tries to send
               {merge_item_states, 6}, %% needs specially-crafted lists
               {tx_item_new, 3}, %% TODO: not a list error
               {tx_item_new, 5} %% TODO invalid result type
  