!!! Overview
[{$pagename}] is the surrounding environment and circumstances that determine meaning of [Digital Identity](s) and the [Policy](s) and protocols that govern their interactions. 

[{$pagename}] has a set of zero or more [Digital Identity]s and would typically be identified by a ContextId. 

* A set of [Claims] about one or more [Digital Identity]
* Have zero or more [Identity Attributes] and is a [Digital Identity]
* Has a schema ([ontology]) that describes kinds of [Entities] and [Attributes] that an instance of this [Context] contains.
* Has its own security and [Access Control] [Policy]

[{$pagename}] can be nested (e.g. [Organizational Entities|Organizational Entity] have sub-organizations, and there are systems within an enterprise/org, etc.) or related through other means (employment/HR system vs. customer system where same person is a [customer] and an employee). Thus federating the [Digital Identity](s) relevant to those [{$pagename}]s provides a [Federated Identity] view of a [Digital Subject] (or at least a partial "overall" view to those [{$pagename}]).


!! [{$pagename}] maybe abstract
Abstract [{$pagename}] are not resolvable to a physical Context instance. These maybe configured only by relationships between [Digital Identity]s

Concrete [{$pagename}] are not abstract.
Some examples:
* through a network (or local) 


!! More Information
There might be more information for this subject on one of the following:
[{ReferringPagesPlugin before='*' after='\n' }]

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* [#1] - [Wikipedia:Public_key_certificate] - Retrieved 2012-11-22