| Concept | Documentation | 
|---|
 | receiving input through | Specifies the Input of a Functional Usage. | 
 | sending output through | Specifies the Output of a Functional Usage. | 
 | General Function Usage Exchange Point | Exchange point of functional usage. | 
 | General Functional Usage | Specifies a General Usage of a General Function within one or more other General Functions. | 
 | General Functional Exchange | Specifies the fact that an General Functional Exchange between General Function Usage Exchange Points Parameters is taking place. | 
 | appearing in | Specifies the fact that a Functional Exchange appears within a general Functiona Usage. | 
 | coming from | Specifies the fact that a General Functional Exchange is coming from a General Functional Usage Exchange Point. | 
 | going to | Specifies the fact that a General Functional Exchange is going to a General Functional Usage Exchange Point. | 
 | controlled after | Specifies a sequential execution of Functions. | 
 | General Function | Specifies a General Function. It is used as base Class for specific System or Context Functions, or Partial Functions. |