+=== 6^SET/BADNODE <call>^Stop spots from this callsign being propagated
+=== 6^UNSET/BADNODE <call>^Allow spots from this callsign again
+Setting a callsign as a 'badnode' will prevent spots from that node
+going any further. They will not be displayed and they will not be
+sent onto other nodes.
+
+The call can be a full or partial call (or a prefix), eg:-
+
+ set/badnode K1TTT
+
+will stop anything from K1TTT (including any SSID's)
+
+ unset/badnode K1TTT
+
+will allow spots from him again.
+
+Use with extreme care. This command may well be superceeded by FILTERing.
+