Defines starting with `s' in bsd/netccitt

• SABM bsd/netccitt/hdlc.h:152
• SABM_CONTROL bsd/netccitt/hdlc.h:125
• SABM_SENT bsd/netccitt/hdlc.h:141
• SENT_CALL bsd/netccitt/pk.h:178
• SENT_CLEAR bsd/netccitt/pk.h:181
• si_class bsd/netccitt/llc_var.h:100
• si_ctlinput bsd/netccitt/llc_var.h:105
• si_input bsd/netccitt/llc_var.h:104
• SIOCGIFCONF_X25 bsd/netccitt/x25.h:180
• SIOCSIFCONF_X25 bsd/netccitt/x25.h:179
• si_trace bsd/netccitt/llc_var.h:102
• si_window bsd/netccitt/llc_var.h:101
• si_xchxid bsd/netccitt/llc_var.h:103
• s_nr bsd/netccitt/llc_var.h:126
• s_oz bsd/netccitt/llc_var.h:123
• s_pf bsd/netccitt/llc_var.h:125
• s_selector bsd/netccitt/llc_var.h:124
• SUPERVISORY_CONTROL bsd/netccitt/llc_var.h:287