diff --git a/src/settings_gui.cpp b/src/settings_gui.cpp
index 4800f9cffc..aa3021b064 100644
--- a/src/settings_gui.cpp
+++ b/src/settings_gui.cpp
@@ -2193,7 +2193,9 @@ struct GameSettingsWindow : Window {
 
 					DropDownList *list = new DropDownList();
 					for (int i = sdb->min; i <= (int)sdb->max; i++) {
-						*list->Append() = new DropDownListStringItem(sdb->str_val + i - sdb->min, i, false);
+						int val = sd->orderproc ? sd->orderproc(i - sdb->min) : i;
+						assert_msg(val >= sdb->min && val <= (int)sdb->max, "min: %d, max: %d, val: %d", sdb->min, sdb->max, val);
+						*list->Append() = new DropDownListStringItem(sdb->str_val + val - sdb->min, val, false);
 					}
 
 					ShowDropDownListAt(this, list, value, -1, wi_rect, COLOUR_ORANGE, true);
diff --git a/src/settings_internal.h b/src/settings_internal.h
index 6aa3ee5067..9c69af9a0f 100644
--- a/src/settings_internal.h
+++ b/src/settings_internal.h
@@ -90,6 +90,7 @@ enum SettingType {
 
 typedef bool OnChange(int32 var);           ///< callback prototype on data modification
 typedef size_t OnConvert(const char *value); ///< callback prototype for conversion error
+typedef int OnGuiOrder(uint nth);            ///< callback prototype for GUI ordering
 
 /** Properties of config file settings. */
 struct SettingDescBase {
@@ -114,6 +115,7 @@ struct SettingDesc {
 	SaveLoad save;          ///< Internal structure (going to savegame, parts to config)
 	const char *patx_name;  ///< Name to save/load setting from in PATX chunk, if NULL save/load from PATS chunk as normal
 	const char *xref;       ///< Name of SettingDesc to use instead of the contents of this one, useful for loading legacy savegames, if NULL save/load as normal
+	OnGuiOrder *orderproc;  ///< Callback procedure for GUI re-ordering
 
 	bool IsEditable(bool do_command = false) const;
 	SettingType GetType() const;
diff --git a/src/table/company_settings.ini b/src/table/company_settings.ini
index 1b30cda52d..48563dabdf 100644
--- a/src/table/company_settings.ini
+++ b/src/table/company_settings.ini
@@ -19,7 +19,7 @@ static const SettingDesc _company_settings[] = {
 };
 [templates]
 SDT_BOOL = SDT_BOOL($base, $var,        $flags, $guiflags, $def,                        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, $patxname),
-SDT_VAR  =  SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, $patxname),
+SDT_VAR  =  SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, $patxname, $orderproc),
 SDT_NULL =  SDT_NULL($length, $from, $to, $extver),
 SDT_END  = SDT_END()
 
@@ -37,6 +37,7 @@ to       = SL_MAX_VERSION
 cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
 patxname = NULL
+orderproc = NULL
 
 
 
diff --git a/src/table/currency_settings.ini b/src/table/currency_settings.ini
index 6a8665379a..94e568f7b2 100644
--- a/src/table/currency_settings.ini
+++ b/src/table/currency_settings.ini
@@ -11,7 +11,7 @@ static const SettingDesc _currency_settings[] = {
 [post-amble]
 };
 [templates]
-SDT_VAR = SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
+SDT_VAR = SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL, $orderproc),
 SDT_CHR = SDT_CHR($base, $var,        $flags, $guiflags, $def,                        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
 SDT_STR = SDT_STR($base, $var, $type, $flags, $guiflags, $def,                        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
 SDT_END = SDT_END()
@@ -29,6 +29,7 @@ from     = 0
 to       = SL_MAX_VERSION
 cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
+orderproc = NULL
 
 
 
diff --git a/src/table/gameopt_settings.ini b/src/table/gameopt_settings.ini
index a5bc766ecb..798a6c9083 100644
--- a/src/table/gameopt_settings.ini
+++ b/src/table/gameopt_settings.ini
@@ -42,12 +42,12 @@ static const SettingDesc _gameopt_settings[] = {
 };
 [templates]
 SDTG_GENERAL = SDTG_GENERAL($name, $sdt_cmd, $sle_cmd, $type, $flags, $guiflags, $var, $length, $def, $min, $max, $interval, $full, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
-SDTG_VAR     =     SDTG_VAR($name,                     $type, $flags, $guiflags, $var,          $def, $min, $max, $interval,        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
+SDTG_VAR     =     SDTG_VAR($name,                     $type, $flags, $guiflags, $var,          $def, $min, $max, $interval,        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL, $orderproc),
 SDT_NULL     =   SDT_NULL($length, $from, $to, $extver),
 SDTC_OMANY   = SDTC_OMANY(       $var, $type, $flags, $guiflags, $def,       $max, $full,            $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, NULL),
 SDTG_OMANY   = SDTG_OMANY($name,       $type, $flags, $guiflags, $var, $def, $max, $full,            $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, NULL),
 SDT_OMANY    =  SDT_OMANY($base, $var, $type, $flags, $guiflags, $def,       $max, $full,            $str, $strhelp, $strval, $proc, $from, $to, $load, $cat, $extver, NULL),
-SDT_VAR      =    SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max,        $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, NULL),
+SDT_VAR      =    SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max,        $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, NULL, $orderproc),
 SDT_END      = SDT_END()
 
 [defaults]
@@ -63,6 +63,7 @@ from     = 0
 to       = SL_MAX_VERSION
 cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
+orderproc = NULL
 
 
 
diff --git a/src/table/misc_settings.ini b/src/table/misc_settings.ini
index c77eba5ad0..9d349b14ed 100644
--- a/src/table/misc_settings.ini
+++ b/src/table/misc_settings.ini
@@ -20,7 +20,7 @@ SDTG_MMANY = SDTG_MMANY($name, $type,          $flags, $guiflags, $var, $def,
 SDTG_OMANY = SDTG_OMANY($name, $type,          $flags, $guiflags, $var, $def,       $max,            $full, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
 SDTG_STR   =   SDTG_STR($name, $type,          $flags, $guiflags, $var, $def,                               $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
 SDTG_BOOL  =  SDTG_BOOL($name,                 $flags, $guiflags, $var, $def,                               $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
-SDTG_VAR   =   SDTG_VAR($name, $type,          $flags, $guiflags, $var, $def, $min, $max, $interval,        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
+SDTG_VAR   =   SDTG_VAR($name, $type,          $flags, $guiflags, $var, $def, $min, $max, $interval,        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL, $orderproc),
 SDTG_END   = SDTG_END()
 
 [defaults]
@@ -36,6 +36,7 @@ from     = 0
 to       = SL_MAX_VERSION
 cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
+orderproc = NULL
 
 
 
diff --git a/src/table/settings.h.preamble b/src/table/settings.h.preamble
index 9e78a500ff..8e53410de6 100644
--- a/src/table/settings.h.preamble
+++ b/src/table/settings.h.preamble
@@ -61,11 +61,14 @@ static size_t ConvertLandscape(const char *value);
 
 /* Macros for various objects to go in the configuration file.
  * This section is for global variables */
-#define SDTG_GENERAL(name, sdt_cmd, sle_cmd, type, flags, guiflags, var, length, def, min, max, interval, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
-	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, NULL, cat), SLEG_GENERAL_X(sle_cmd, var, type | flags, length, from, to, extver), patxname, NULL}
+#define SDTG_GENERAL2(name, sdt_cmd, sle_cmd, type, flags, guiflags, var, length, def, min, max, interval, full, str, strhelp, strval, proc, from, to, cat, extver, patxname, orderproc)\
+	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, NULL, cat), SLEG_GENERAL_X(sle_cmd, var, type | flags, length, from, to, extver), patxname, NULL, orderproc}
 
-#define SDTG_VAR(name, type, flags, guiflags, var, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
-	SDTG_GENERAL(name, SDT_NUMX, SL_VAR, type, flags, guiflags, var, 0, def, min, max, interval, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname)
+#define SDTG_GENERAL(name, sdt_cmd, sle_cmd, type, flags, guiflags, var, length, def, min, max, interval, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
+	SDTG_GENERAL2(name, sdt_cmd, sle_cmd, type, flags, guiflags, var, length, def, min, max, interval, full, str, strhelp, strval, proc, from, to, cat, extver, patxname, NULL)
+
+#define SDTG_VAR(name, type, flags, guiflags, var, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname, orderproc)\
+	SDTG_GENERAL2(name, SDT_NUMX, SL_VAR, type, flags, guiflags, var, 0, def, min, max, interval, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname, orderproc)
 
 #define SDTG_BOOL(name, flags, guiflags, var, def, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
 	SDTG_GENERAL(name, SDT_BOOLX, SL_VAR, SLE_BOOL, flags, guiflags, var, 0, def, 0, 1, 0, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname)
@@ -83,17 +86,20 @@ static size_t ConvertLandscape(const char *value);
 	SDTG_GENERAL(name, SDT_MANYOFMANY, SL_VAR, type, flags, guiflags, var, 0, def, 0, 0, 0, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)
 
 #define SDTG_NULL(length, from, to, extver)\
-	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_NULL_X(length, from, to, extver), NULL, NULL}
+	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_NULL_X(length, from, to, extver), NULL, NULL, NULL}
 
-#define SDTG_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_END(), NULL, NULL}
+#define SDTG_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLEG_END(), NULL, NULL, NULL}
 
 /* Macros for various objects to go in the configuration file.
  * This section is for structures where their various members are saved */
-#define SDT_GENERAL(name, sdt_cmd, sle_cmd, type, flags, guiflags, base, var, length, def, min, max, interval, full, str, strhelp, strval, proc, load, from, to, cat, extver, patxname)\
-	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, load, cat), SLE_GENERAL_X(sle_cmd, base, var, type | flags, length, from, to, extver), patxname, NULL}
+#define SDT_GENERAL2(name, sdt_cmd, sle_cmd, type, flags, guiflags, base, var, length, def, min, max, interval, full, str, strhelp, strval, proc, load, from, to, cat, extver, patxname, orderproc)\
+	{NSD_GENERAL(name, def, sdt_cmd, guiflags, min, max, interval, full, str, strhelp, strval, proc, load, cat), SLE_GENERAL_X(sle_cmd, base, var, type | flags, length, from, to, extver), patxname, NULL, orderproc}
 
-#define SDT_VAR(base, var, type, flags, guiflags, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
-	SDT_GENERAL(#var, SDT_NUMX, SL_VAR, type, flags, guiflags, base, var, 1, def, min, max, interval, NULL, str, strhelp, strval, proc, NULL, from, to, cat, extver, patxname)
+#define SDT_GENERAL(name, sdt_cmd, sle_cmd, type, flags, guiflags, base, var, length, def, min, max, interval, full, str, strhelp, strval, proc, load, from, to, cat, extver, patxname)\
+	SDT_GENERAL2(name, sdt_cmd, sle_cmd, type, flags, guiflags, base, var, length, def, min, max, interval, full, str, strhelp, strval, proc, load, from, to, cat, extver, patxname, NULL)
+
+#define SDT_VAR(base, var, type, flags, guiflags, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname, orderproc)\
+	SDT_GENERAL2(#var, SDT_NUMX, SL_VAR, type, flags, guiflags, base, var, 1, def, min, max, interval, NULL, str, strhelp, strval, proc, NULL, from, to, cat, extver, patxname, orderproc)
 
 #define SDT_BOOL(base, var, flags, guiflags, def, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
 	SDT_GENERAL(#var, SDT_BOOLX, SL_VAR, SLE_BOOL, flags, guiflags, base, var, 1, def, 0, 1, 0, NULL, str, strhelp, strval, proc, NULL, from, to, cat, extver, patxname)
@@ -114,11 +120,11 @@ static size_t ConvertLandscape(const char *value);
 	SDT_GENERAL(#var, SDT_MANYOFMANY, SL_VAR, type, flags, guiflags, base, var, 1, def, 0, 0, 0, full, str, strhelp, strval, proc, NULL, from, to, cat, extver, patxname)
 
 #define SDT_NULL(length, from, to, extver)\
-	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(length, from, to, extver), NULL, NULL}
+	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(length, from, to, extver), NULL, NULL, NULL}
 
 
-#define SDTC_VAR(var, type, flags, guiflags, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
-	SDTG_GENERAL(#var, SDT_NUMX, SL_VAR, type, flags, guiflags, _settings_client.var, 1, def, min, max, interval, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname)
+#define SDTC_VAR(var, type, flags, guiflags, def, min, max, interval, str, strhelp, strval, proc, from, to, cat, extver, patxname, orderproc)\
+	SDTG_GENERAL2(#var, SDT_NUMX, SL_VAR, type, flags, guiflags, _settings_client.var, 1, def, min, max, interval, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname, orderproc)
 
 #define SDTC_BOOL(var, flags, guiflags, def, str, strhelp, strval, proc, from, to, cat, extver, patxname)\
 	SDTG_GENERAL(#var, SDT_BOOLX, SL_VAR, SLE_BOOL, flags, guiflags, _settings_client.var, 1, def, 0, 1, 0, NULL, str, strhelp, strval, proc, from, to, cat, extver, patxname)
@@ -133,7 +139,7 @@ static size_t ConvertLandscape(const char *value);
 	SDTG_GENERAL(#var, SDT_ONEOFMANY, SL_VAR, type, flags, guiflags, _settings_client.var, 1, def, 0, max, 0, full, str, strhelp, strval, proc, from, to, cat, extver, patxname)
 
 #define SDT_XREF(from, to, extver, xref)\
-	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(0, from, to, extver), NULL, xref}
+	{{"", NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_CONDNULL_X(0, from, to, extver), NULL, xref, NULL}
 
-#define SDT_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_END(), NULL, NULL}
+#define SDT_END() {{NULL, NULL, {0}, {0}, 0, 0, 0, NULL, STR_NULL, STR_NULL, STR_NULL, NULL, NULL, SC_NONE}, SLE_END(), NULL, NULL, NULL}
 
diff --git a/src/table/settings.ini b/src/table/settings.ini
index ad18f97fcf..1de4aacadc 100644
--- a/src/table/settings.ini
+++ b/src/table/settings.ini
@@ -59,6 +59,10 @@ static bool CheckSharingAir(int32 p1);
 #endif /* ENABLE_NETWORK */
 /* End - Callback Functions for the various settings */
 
+/* Begin - GUI order callbacks */
+
+/* End - GUI order callbacks */
+
 /* Some settings do not need to be synchronised when playing in multiplayer.
  * These include for example the GUI settings and will not be saved with the
  * savegame.
@@ -73,17 +77,17 @@ const SettingDesc _settings[] = {
 };
 [templates]
 SDTG_BOOL  =  SDTG_BOOL($name,              $flags, $guiflags, $var, $def,                        $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
-SDTG_VAR   =   SDTG_VAR($name,       $type, $flags, $guiflags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
+SDTG_VAR   =   SDTG_VAR($name,       $type, $flags, $guiflags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname, $orderproc),
 SDTG_OMANY = SDTG_OMANY($name,       $type, $flags, $guiflags, $var, $def,       $max, $full,     $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDTC_BOOL  =  SDTC_BOOL(       $var,        $flags, $guiflags, $def,                              $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDTC_LIST  =  SDTC_LIST(       $var, $type, $flags, $guiflags, $def,                              $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDTC_OMANY = SDTC_OMANY(       $var, $type, $flags, $guiflags, $def,             $max, $full,     $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDTC_STR   =   SDTC_STR(       $var, $type, $flags, $guiflags, $def,                              $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
-SDTC_VAR   =   SDTC_VAR(       $var, $type, $flags, $guiflags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
+SDTC_VAR   =   SDTC_VAR(       $var, $type, $flags, $guiflags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname, $orderproc),
 SDT_BOOL   =   SDT_BOOL($base, $var,        $flags, $guiflags, $def,                              $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
 SDT_OMANY  =  SDT_OMANY($base, $var, $type, $flags, $guiflags, $def,             $max, $full,     $str, $strhelp, $strval, $proc, $from, $to, $load, $cat, $extver, $patxname),
 SDT_STR    =    SDT_STR($base, $var, $type, $flags, $guiflags, $def,                              $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
-SDT_VAR    =    SDT_VAR($base, $var, $type, $flags, $guiflags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname),
+SDT_VAR    =    SDT_VAR($base, $var, $type, $flags, $guiflags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to,        $cat, $extver, $patxname, $orderproc),
 SDT_NULL   =   SDT_NULL($length, $from, $to, $extver),
 SDT_XREF     = SDT_XREF(         $from, $to, $extver, $xref),
 SDT_END    = SDT_END()
@@ -103,6 +107,7 @@ cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
 patxname = NULL
 xref     = <this parameter must be set>
+orderproc = NULL
 
 
 
diff --git a/src/table/win32_settings.ini b/src/table/win32_settings.ini
index a22e1a54e7..9c576c6b8e 100644
--- a/src/table/win32_settings.ini
+++ b/src/table/win32_settings.ini
@@ -18,7 +18,7 @@ static const SettingDescGlobVarList _win32_settings[] = {
 #endif /* WIN32 */
 [templates]
 SDTG_BOOL = SDTG_BOOL($name,        $flags, $guiflags, $var, $def,                        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
-SDTG_VAR  =  SDTG_VAR($name, $type, $flags, $guiflags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
+SDTG_VAR  =  SDTG_VAR($name, $type, $flags, $guiflags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL, $orderproc),
 SDTG_END  = SDTG_END()
 
 [defaults]
diff --git a/src/table/window_settings.ini b/src/table/window_settings.ini
index a7b1742040..f2e8f0111e 100644
--- a/src/table/window_settings.ini
+++ b/src/table/window_settings.ini
@@ -13,7 +13,7 @@ static const SettingDesc _window_settings[] = {
 };
 [templates]
 SDT_BOOL = SDT_BOOL($base, $var,        $flags, $guiflags, $def,                        $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
-SDT_VAR  =  SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL),
+SDT_VAR  =  SDT_VAR($base, $var, $type, $flags, $guiflags, $def, $min, $max, $interval, $str, $strhelp, $strval, $proc, $from, $to, $cat, $extver, NULL, $orderproc),
 SDT_END  = SDT_END()
 
 [defaults]
@@ -30,6 +30,7 @@ from     = 0
 to       = SL_MAX_VERSION
 cat      = SC_ADVANCED
 extver   = SlXvFeatureTest()
+orderproc = NULL