cim: CIM (GNU Simula compiler) cim: cim: GNU Cim is a compiler for the programming language Simula (except cim: unspecified parameters to formal or virtual procedures (see the cim: documentation for how portable code for formal procedures can be cim: written)). It offers a class concept, separate compilation with full cim: type checking, interface to external C routines, an application cim: package for process simulation and a coroutine concept. cim: cim: cim: