Describes concepts used to describe system contexts in the SAF Physical Domain and related concepts.

Concept	Documentation
Conceptual Context Element	Represents an abstract element in the given System Context on Conceptual Level, outside the SOI scope, interacting with the SOI.
Conceptual External System	A Conceptual External System in the Conceptual Domain, outside the SOI scope, interacting with the SOI. E.g., power grid, mobile network, fresh water system (in a house).
Conceptual System Context	Specifies the fact that a System Context for a System of Interest is defined on Conceptual Level.
Physical Environment	The Physical Environment in the Physical Domain, outside the SOI scope, interacting with the SOI. E.g. air, dirt, sun, road.
Physical System Context	Specifies the fact that a context for a System of Interest is defined on Physical Level.
Physical Context Element	Abstract element of a System Context on Physical Level, outside the SOI scope, interacting with the SOI.
Physical External System	The Physical External System in the Physical Domain, outside the SOI scope, interacting with the SOI. E.g. power grid, mobile network, fresh water system (in a house).
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.
Physical System	Abstract element representing physical structure items keeping properties and relations applicable to all physical items.
Conceptual Environment	A Conceptual Environment in the Conceptual Domain, outside the SOI scope, interacting with the SOI. E.g., air, dirt, sun, road.
concepting	Specifies the fact that a logical Environment Entity is a concept for a Physical Environment Entity.
concepting	Specifies that the Logical System is a concept for a Physical System.
Conceptual User	The Conceptual User is the representation for a human in the Conceptual Domain, outside the SOI scope, interacting with the SOI.
concepting	Specifies that the Logical user is a concept for a Physical User.
Conceptual Context Element Role	Specifies the fact that a Conceptual Context Element acts in a given Conceptual System Context.
Conceptual SOI Role	Specifies the fact that a Conceptual System acts as SOI exists in a given Conceptual System Context.
Physical Context Element Role	Specifies the fact that a Physical Context Element exists in a given Physical System Context.
Physical SOI Role	Specifies the fact that a Physical SOI exists in a given Physical System Context.
Physical User	The Physical User is the representation for a human in the physical domain, outside the SOI scope, interacting with the SOI.
System Context Role	General role of a Logical System Context.
specifying	Specifies the fact that one or more Logical Element specifies exactly one Physical Element. Rationale: If more than one Physical Element would offer to realize the functionality specified by a Logical Element the responsibility would be ambiguous. It is okay to assign several Logical Elements to one Physical Element. This means all specified functionality assigned to the Logical Elements is to be implemented by the Physical Element. Note, that typically the usage of logical elements in a context is mapped to the usage of physical elements in a context (allocation of usage). Thus this relationship between the definitions is derived.
Physical Context Role	General role of a Physical System Context.
specifying	Specifies the fact that one Conceptual SOI Role specifies one Physical SOI Role. definitions is derived.