diff --git a/src/ex_cmds.h b/src/ex_cmds.h
index 49e86a4..71a0e2a 100644
--- a/src/ex_cmds.h
+++ b/src/ex_cmds.h
@@ -877,18 +877,26 @@
 			RANGE|NOTADR|BANG|WORD1|TRLBAR|ZEROR),
 EX(CMD_tags,		"tags",		do_tags,
 			TRLBAR|CMDWIN),
-EX(CMD_tab,		"tab",		ex_tab,
-			RANGE|NOTADR|COUNT|TRLBAR),
+EX(CMD_tab,		"tab",		ex_wrongmodifier,
+			NEEDARG|EXTRA|NOTRLCOM),
 EX(CMD_tabclose,	"tabclose",	ex_tabclose,
 			RANGE|NOTADR|COUNT|BANG|TRLBAR|CMDWIN),
 EX(CMD_tabedit,		"tabedit",	ex_splitview,
 			BANG|FILE1|RANGE|NOTADR|EDITCMD|ARGOPT|TRLBAR),
 EX(CMD_tabfind,		"tabfind",	ex_splitview,
 			BANG|FILE1|RANGE|NOTADR|EDITCMD|ARGOPT|NEEDARG|TRLBAR),
+EX(CMD_tabmove,		"tabmove",	ex_tabmove,
+			RANGE|NOTADR|COUNT|TRLBAR|ZEROR),
+EX(CMD_tabnext,		"tabnext",	ex_tabnext,
+			RANGE|NOTADR|COUNT|TRLBAR),
 EX(CMD_tabnew,		"tabnew",	ex_splitview,
 			BANG|FILE1|RANGE|NOTADR|EDITCMD|ARGOPT|TRLBAR),
 EX(CMD_tabonly,		"tabonly",	ex_tabonly,
 			TRLBAR|CMDWIN),
+EX(CMD_tabprevious,	"tabprevious",	ex_tabprevious,
+			RANGE|NOTADR|COUNT|TRLBAR),
+EX(CMD_tabNext,		"tabNext",	ex_tabprevious,
+			RANGE|NOTADR|COUNT|TRLBAR),
 EX(CMD_tabs,		"tabs",		ex_tabs,
 			TRLBAR|CMDWIN),
 EX(CMD_tcl,		"tcl",		ex_tcl,