Source : Free On-Line Dictionary of Computing

LOOPN
     
         A {compiler}, {simulator},
        and associated {source} control for an {object-oriented}
        {Petri net} language developed by Charles Lakos
         at the {University of
        Tasmania}.  In LOOPN, a Petri net is an extension of a
        {coloured timed Petri net}.  The extension means firstly that
        token types are {class}es.  In other words, they consist of
        both data fields and functions, they can be declared by
        inheriting from other token types, and they can be used
        {polymorphic}ally.  The object-oriented extensions also mean
        that module or subnet types are classes.
     
        LOOPN has been developed over a period of about five years at
        the University of Tasmania, where it has been used in teaching
        computer simulation and the modelling of {network}
        {protocols}.
     
        {(ftp://ftp.cs.adelaide.edu.au/pub/OPN/loopn/)}.
     
        (2000-09-02)