UML Profiling and DSL Guide 2026x Domain Specific Language customization Current: Using Customization Data Using Customization Data The following sections describe how to use customization data in particular cases while working with models and our modeling tools. Customizing Specification Window Customizing Element Shortcut Menu Customizing Drag-and-Drop Creating Custom Rules for Relationships Defining Preferred Metatype Initializing a Custom Model Creating a DSL Element from the Customized Category in the Shortcut Menu Customizing Possible Owned Elements Creating Element - Specific Help Topics Creating a DSL Element from the Shortcut Menu and Other Locations Customizing Symbols Creating Property Groups and Subgroups Creating Numbering Customizations Extending Metamodel with Derived Properties Additional resources Enabling Domain Specific Extensions to SysML ×