With EA-Matic you can develop add-ins for Enterprise Architect using the built-in scripting feature of EA.
With this EA-Matic script you can configure your own default line-styles depending on the type of connector.
In Enterprise Architect you can choose from no less then 9 different line style for the connectors.
Unfortunately you can only choose from the first three to be the default line style for new connectors.
Additionally you can also specify the default for Generalization to be Tree Style.… Read more