A Parametric diagram includes the usage of a constraint block to constrain the properties of another Service Specifiction. It contains constraint properties and constraint parameters as well as other properties from within that internal block context. All properties displayed, other than the constraints themselves, must either be bound directly to a constraint parameter or contain a property that is bound to a constraint parameter (through any number of containment levels). A constraint block generally contain many constraints, each of them containing many constraint parameters.
