Since I've been registered here, there seems to be more interest in my login name than my "contributions".  It's simply a contraction of my name (peter allen) which just happens to fall phonetically between the volatile  'petrol'  and the pelagic  'petrel' .

    ("Our own Dominus", among others, observes that not all petrels are stormy.)

(The only place you can't throw your garbage is away.)