Found this link :- long winded, any law types that may be able to shed some light for us laymen.
http://books.google.com.au/books?id=hkJLJenURnIC&pg=PA41&lpg=PA41&dq=non+final+action+on+application&source=web&ots=6ee7EEycWE&sig=p7GmUxcQbMRDamqi3IzG64DQj_c&hl=en#PPP1,M1