the type of connection. As an example, consider a relay. The connections of the poles are direct, done by a piece of metal, but the contacts of the relay coil(s) must also be shown. In this case connectionType="direct" means it is a direct connection, connectionType="coil" means that a coil has to be shown between the contacts. Connection types can also be identified by using coded values like "1" - direct connection, "2" - coil, etc.