You can extend the properties and linking capabilities of UPDM items through Tag Definitions.

If you want to add new Tag Definitions to a UPDM profile stereotype, ensure that you create the Tag Definitions outside of the UPDM profile. On updating the UPDM profile, Modeler will retain Stereotype links to Tag Definitions that are not in the UPDM profile package. If you create new Stereotypes and Tag Definitions within the UPDM profile package, the update process will delete those Stereotypes and Tag Definitions.

You can create your own aliases for the diagrams, items and links that appear in the UPDM profile.

You can create new item and link types that are based on UPDM item and link types through lightweight extensions. Through lightweight extensions, new item and link types are created as subtypes of UPDM item and links types, and as such they inherit the properties and linking capabilities of the UPDM item and link types they extend. In addition, the new item and link types appear in the same selection dialogs as the item and link types they extend.