A CPN is only useful, when diff erent types of tokens are needed. Otherwise a normal P/T-Net is sufficient. A click on the proper icon in the toolbar provides a possibility to create new types of tokens.
The option of changing the amount of tokens in a place off ers more detailed options when creating or modifying a CPN.
The following figure illustrates how to modify the constraint of an arc.
The sections “P/T-Net specifi c editing” and “CPN specifi c editing” showed features, which are di fferent in P/T-Nets and CPNs. The subsequent chapters discuss options which are available for both types of nets.