The Type Selection Mode turns on the automatic port and part type selection. When the function is turned on: If a part does not have a specified type, then a new type for the part will be created on a nested port creation. A type for the new port will be created, too. If a part does not have a name, type the name on the part shape on the diagram and the type will be created automatically. The typed name will be the name of the part type (NOTE: that part will be without a name). To turn on the Type Selection Mode On the Composite Structure, Class, Component, or Package diagrams palette, click . The Type Selection Mode works separately for each project. You can save the time spent looking for elements in the type selection list by using package imports.