Index: branches/5.1.x/core/install/install_schema.sql
===================================================================
diff -u -N -r13390 -r13444
--- branches/5.1.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 13390)
+++ branches/5.1.x/core/install/install_schema.sql	(.../install_schema.sql)	(revision 13444)
@@ -57,11 +57,13 @@
   DisplayOrder double NOT NULL DEFAULT '0',
   GroupDisplayOrder double NOT NULL DEFAULT '0',
   `Install` int(11) NOT NULL DEFAULT '1',
+  HintLabel varchar(255) DEFAULT NULL,
   PRIMARY KEY (VariableId),
   UNIQUE KEY VariableName (VariableName),
   KEY DisplayOrder (DisplayOrder),
   KEY GroupDisplayOrder (GroupDisplayOrder),
-  KEY `Install` (`Install`)
+  KEY `Install` (`Install`),
+  KEY HintLabel (HintLabel)
 );
 
 CREATE TABLE EmailQueue (