Suggestion: Full documentation of actions %_counter% says

%_counter%    Counter (starting with 1)

Could this please be improved to say actually what is being counted? Program behaviour suggests %_counter% returns an integer representing the position of the track in the list of tracks being processed, but before I rely on this, I'd like this to be defined behaviour.

Note: this is specific to %_counter% in actions - not including the differently documented %_counter% in export.