Component diagram model element notation differences

You can use the mapping table for Component diagram model elements to understand the differences between UML 1.4 and the currently supported version of the UML.
UML 1.4 Supported UML version
Component Component
Note: All components such as Subprogram Body, Package Specification, and Task Specifications (stereotyped components) map to the single UML Component metaclass; however, the UML Component stereotype identifies them as Subprogram Body, Package Specification, and so on.

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