This proposal is about designing and implementing a Petri module so
that the module can collaborate with other modules in a Modular Petri
net. Modular Petri net and developing Petri modules with GPenSIM is
described in GPenSIM manuals, especially in Addendum-4: Creating
Modular Petri net models .
Literature study shows that most of the discrete-event systems can be
modularized and that there are some basic building blocks (such as serial
block, iterative block, assembly, and disassembly, etc.)