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To aid in the efficiency in creating models the modeler may adapt SysML to their particular domain. This can be done using several possibilities allowed in SysML:
If language modeler wants to make the use of a particular profile mandatory then the relationship between the model and the profile shall be required.
Images in this section are copied from T. Weilkiens, “Systems Engineering with SysML/UML” MK Press (2006).
Example of extending a metaclass with a Stereotype. Note the black arrow