| A Context in which some Resource or Party exists in an unchanging state: for example, a Person lives, a Product is Available, an error is present. Changes are brought about by Events, which give rise to new States. It is not that no attributes of a Resource or Party change, only that that their defined attributes within that Context do not change. For example, if a Person is resident in Canada from 2001 to 2003, this means that their resident status does not change in that period. The fact that they may get married or sign a recording contract in that period does not affect the unchanging nature of their State of residence. |