:- protocol(event_handlersp).
:- info([
version is 1.1,
author is 'Paulo Moura',
date is 2003/2/12,
comment is 'Event handlers protocol.']).
:- public(before/3).
:- mode(before(@object, @nonvar, @object), zero_or_one).
:- info(before/3, [
comment is 'Before event handler.',
argnames is ['Object', 'Message', 'Sender']]).
:- public(after/3).
:- mode(after(@object, @nonvar, @object), zero_or_one).
:- info(after/3, [
comment is 'After event handler.',
:- end_protocol.