Effectively a form of trust whereby land or income from land was held by a number of trustees for the use of another person. (Heath, Peter. Church and Realm, 1272-1461, 369)
A relationship from a concrete use case to an abstract use case in which the behavior defined for the concrete use case employs the behavior defined for the abstract use case.
An entry attribute providing a list of parameters which are referenced but not not modified by a call to this entry, to aid in optimization. (see SETS.)