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# ''Generalization-specialization link''
# ''Inheritance through specialization''
# ''Specialization restriction through discriminating attribute'': A subset of the possible values of an inherited attribute may restrict the specialization.
; Classification-instantiation and system execution
# ''Classification-instantiation link'': A source thing, which is an object class or a process class connect to one or more destination things, which are valued instances of the source thing's pattern, i.e. the features specified by the pattern acquire explicit values. This relation provides the modeler with an explicit mechanism for expressing the relationship between a class and its instances created by the provision of feature values. Graphically, a small black circle inside an otherwise empty larger triangle with apex connecting by a line to the class thing and the instance things connecting by lines to the opposite base defines the classification-instantiation relation link. The syntax is: Instance-thing is an instance of Class-thing.
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