Slot: key

True means that the key slot(s) uniquely identify the container. In future releases, it will be possible for there to be compound keys, where several slots combine to produce a unique identifier

URI: meta:key

Domain and Range

SlotDefinition -> _OPT Boolean

Parents

Children

Used by

• SlotDefinition

Other properties

Comments:		key is inherited
		a given domain can have at most one key slot (restriction to be removed in the future)
		identifiers and keys are mutually exclusive. A given domain cannot have bot
		a key slot is automatically required. Keys cannot be optional