Standard port [SysML] : Synonym: Port.
State [UML] : A state represents a set of value combinations for a given element. A state has a name
and may have an internal behavior that is executed based on defi ned events.
292 Glossary
State invariant [UML] : A constraint that refers to a lifeline, and which must be met at system
runtime.
State machine [UML] : A state machine describes the states and transitions of a structure.
State machine diagram [UML] : A diagram that depicts a state machine.
Stereotype [UML] : A stereotype expands an existing model element by additional properties and
semantic. The newly defi ned model element can include a new notation, in addition to the
name. Stereotypes are grouped in profi les.
Streaming [UML] : A property describing that activities or actions can accept or supply new
values during active operation.
Structural allocation [SysML] : A structural allocation is used to separate logical from physical
structures by producing a relationship between the two levels.
Structure diagram [UML] : A generic term for all static diagrams in SysML and UML.
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