petrinet
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It is the elementary system for input, editing of Petri nets,
and also imitations of their dynamics. If you know about
Petri nets you without effort will disassemble with functions of the program.
Otherwise may read the magnificent monography of 
J. Peterson (or monographies of V.E.Kotov or A.I.Sleptsov); without 
doubts will like you simple, evident models, which
have not only graphic performance, but also strict
the mathematical description. A scope of Petri nets very much
it is wide: from modelling computing and industrial
systems to planning military operations of the Pentagon.

Do not overlook, that it not industrial system, but only only
the prototype for developed a little after systems the Nevod and the Opera.
The basis was written in 1987 on only appeared personal
computers Jamaha. Nevertheless, for the scientific and educational purposes 
it is possible to apply and such laconic variant. 

Dmitry Zaitsev
Email: zsoftua@yahoo.com
