Please note : This help page is not for the latest version of Enterprise Architect. The latest help can be found here.
The connector list does not actually display until you release the mouse button over the target element; however, a dotted line shows where the connector would be at any point, and a hatched outline displays within the border of an element as you move the cursor onto it - this helps you identify where the connector should connector to, if there are many closely-arranged elements, Parts, Ports or other extensions.
The list contains the most appropriate, commonly-used types of connector for the source and target element types. If you want to use a different type of connector, select the appropriate Toolbox page, click on the required connector and then on the source element, and drag across to the target element.