1. A trace encounters a via and then continues on the same plane.
2. A trace encounters a via, goes and goes through its reference plane
and continues on the other side.
**** To unsubscribe from si-list: send e-mail to email@example.com. In the BODY of message put: UNSUBSCRIBE si-list, for more help, put HELP. si-list archives are accessible at http://www.qsl.net/wb6tpu/si-list ****