+#define ERR_DONTCHEAT 516 /* Undernet extension */
+#define ERR_DISABLED 517 /* Undernet extension -Kev */
+/* ERR_NOINVITE 518 unreal */
+#define ERR_LONGMASK 518 /* Undernet extension -Kev */
+/* ERR_ADMONLY 519 unreal */
+#define ERR_TOOMANYUSERS 519 /* Undernet extension -Kev */
+/* ERR_OPERONLY 520 unreal */
+#define ERR_MASKTOOWIDE 520 /* Undernet extension -Kev */
+/* ERR_WHOTRUNC 520 austnet */
+/* ERR_LISTSYNTAX 521 dalnet
+ ERR_LISTSYNTAX 521 dalnet
+ ERR_WHOSYNTAX 522 dalnet
+ ERR_WHOLIMEXCEED 523 dalnet */
+#define ERR_QUARANTINED 524 /* Undernet extension -Vampire */
+#define ERR_INVALIDKEY 525 /* Undernet extension */
+
+#define ERR_NOTLOWEROPLEVEL 560 /* Undernet extension */
+#define ERR_NOTMANAGER 561 /* Undernet extension */
+#define ERR_CHANSECURED 562 /* Undernet extension */
+#define ERR_UPASSSET 563 /* Undernet extension */
+#define ERR_UPASSNOTSET 564 /* Undernet extension */
+/* ERR_NOMANAGER_LONG 565 no longer used */
+#define ERR_NOMANAGER 566 /* Undernet extension */
+#define ERR_UPASS_SAME_APASS 567 /* Undernet extension */
+#define ERR_LASTERROR 568
+
+/* RPL_LOGON 600 dalnet,unreal
+ RPL_LOGOFF 601 dalnet,unreal
+ RPL_WATCHOFF 602 dalnet,unreal
+ RPL_WATCHSTAT 603 dalnet,unreal
+ RPL_NOWON 604 dalnet,unreal
+ RPL_NOWOFF 605 dalnet,unreal
+ RPL_WATCHLIST 606 dalnet,unreal
+ RPL_ENDOFWATCHLIST 607 dalnet,unreal
+
+ RPL_MAPMORE 610 unreal
+
+ RPL_MAPMORE 615 PTlink
+
+ RPL_DCCSTATUS 617 dalnet
+ RPL_DCCLIST 618 dalnet
+ RPL_ENDOFDCCLIST 619 dalnet
+ RPL_DCCINFO 620 dalnet
+
+ RPL_DUMPING 640 unreal
+ RPL_DUMPRPL 641 unreal
+ RPL_EODUMP 642 unreal
+*/