画渔网图案，渔网是用线结成很多网眼组成的。网眼是椭圆形的每个网眼有是有四段椭圆弧组成、每段椭圆弧是四分之一个椭圆，不过其长轴方向不同。-Painting pattern of fishing nets, fishing nets, lines formed a lot of mesh composed of. The mesh is oval each mesh is the Sec elliptical arcs, each elliptical arc is a quarter ellips

Petri Nets Simulator with Individual Tokens Application allows you to create, analyse and simulate the following types of Petri nets: PT nets, nets with indywidual tokens and constant arc labels and nets with indywidual tokens and variable arc l