I tried to add this to the bugtracker but it doesn't show up, i must have done something wrong.
There is no documentation on the outlets of the [counter] object, so here's what I found:
outlet 1- outputs number + bang
outlet 2 - (when counting down) outputs bang when reaches 0 and when starting the countdown over
outlet 3 - (when counting up) outputs a 1+bang when it reaches max value and 0+bang when starting over; (when counting up & down) same as when counting up
outlet 4 - (when counting up) outputs the number of times the secuence has been completed + bang
hopefully this can be added (better written, of course) to the help file.