Basic concepts of system elements in the logical and physical domain.

Concept	Documentation
System Of Interest	An abstract element representing a SOI. Base class for specific kinds of SOIs.
Logical Context SOI_ Deprecated	Represents the Logical SOI in the System Context on Logical Level.
System State	Describes a state (or mode) of something on system level that can have distinct states.
USAGEallocatedTo	Specifies the fact that a Usage of Function is allocated to a Usage of System Element.
General Functional Usage	Specifies a General Usage of a General Function within one or more other General Functions.
Conceptual System	Describes a conceptual system as specification for an implementation of a system. It is used in both functional and logical architectures on any hierarchy level.
Conceptual Internal Role	Specifies the fact that a Conceptual System may consist of Conceptual Systems (a white box perspective on a conceptual system).
LETbeeingInSSE	Specifies the System States a Logical Element can be in.
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.
LETimplementingGFN	Specifies the fact that a Logical Element is responsible to implement a System Function. Note: Logical Elements don't "implement" anything, they pass the function implementation task to Physical Elements.
System	An abstract element representing a System.