We show that recogniser P systems with active membranes can be
augmented with a priority over their set of rules and any number of membrane
charges without loss of generality, as they can be simulated by standard P systems
with active membranes, in particular using only two charges. Furthermore, we
show that more general accepting conditions, such as sending out several, possibly
contradictory results and keeping only the first one, or rejecting by halting without
output, are also equivalent to the standard accepting conditions. The simulations
we propose are always without significant loss of efficiency, and thus the results of
this paper can hopefully simplify the design of algorithms for P systems with active
membranes
