-; Off shutdown off none off *On (or +Fault)
-; On power-up on none off Fault, or *Off
-; Stopping shutdown off 500ms 50% 1/100ms ->Retry
-; Retry power-up off 50ms off ->Off, or Persists
-; Persists shutdown off 90ms on ->Retry
-; * = when host instructs
-; + = lost race, only
-; -> = after timeout
+; Off shutdown off none off On
+; On power-up on none off Stopping,FAULT Off
+; Stopping shutdown on 500ms 50% 1/100ms Retry
+; Retry power-up off 50ms off Persists Off,FIXED Off
+; Persists shutdown off 90ms on Retry Off
+;
+; (no notation: event ignored)
+ make code correspond to new
+ get rid of Clearing state.