This paper focusses on a language which allows to program and encapsulate control environments. The proposal is to tackle control related problems much the same way data type related problems have been tackled in recent programming language designs, that is introducing the possibility of building complex structures starting from a restricted set of primitive notions and providing a hiding mechanism allowing new objects to be used as if they were primitive in the language. An example of a control package implementing recursion along with simple exception handling mechanisms tries to put the ideas in focus.