-define('ADMIN_EDIT_REFDEPTHS', "Edit / delete / add referral levels");
-define('ADD_NEW_REFDEPTH', "Add new referral level");
-define('ADD_DEPTH', "Add referral level");
-define('ENTER_REF_LVL', "Referral level");
+define('ADMIN_EDIT_REFDEPTHS', "Edit / delete / add referal levels");
+define('ADD_NEW_REFDEPTH', "Add new referal level");
+define('ADD_DEPTH', "Add referal level");
+define('ENTER_REF_LVL', "Referal level");