+/* Procedures exported from demand.c */
+void demand_conf __P((void)); /* config interface(s) for demand-dial */
+void demand_block __P((void)); /* set all NPs to queue up packets */
+void demand_unblock __P((void)); /* set all NPs to pass packets */
+void demand_discard __P((void)); /* set all NPs to discard packets */
+void demand_rexmit __P((int)); /* retransmit saved frames for an NP */
+int loop_chars __P((unsigned char *, int)); /* process chars from loopback */
+int loop_frame __P((unsigned char *, int)); /* process frame from loopback */
+