+ /* activating a slave is a session-property.
+ * The slave type is a RC property.
+ * When the slave is active is must not be reconfigured.
+ * This is a UI limitation, imposed by audio-clock and
+ * status displays which combine RC-config & session-properties.
+ *
+ * Notficy RCOptionEditor by emitting a signal if the active
+ * status changed:
+ */
+ Config->ParameterChanged("sync-source");
+