In Pi Calculus, as defined by Milner, global channels may be declared implicitly by reference. In this implementation of Stochastic Pi Calculus, they must be declared explicitly for each module in which they are referenced. They are shared between all modules. The declaration has the form: public(). See BNF.txt. See the modules in Examples/boolean and in Examples/circadian. This document is licensed under Gnu General Public License - Version 3 http://www.nongnu.org/efcp/gnu-gpl3.html