diff --git a/src/settings.cpp b/src/settings.cpp
index 1162eee2d4..40b372212c 100644
--- a/src/settings.cpp
+++ b/src/settings.cpp
@@ -459,13 +459,14 @@ StringID IntSettingDesc::GetHelp() const
  */
 void IntSettingDesc::SetValueDParams(uint first_param, int32_t value) const
 {
+	auto [min_val, _] = this->GetRange();
 	if (this->set_value_dparams_cb != nullptr) {
 		this->set_value_dparams_cb(*this, first_param, value);
 	} else if (this->IsBoolSetting()) {
 		SetDParam(first_param++, value != 0 ? STR_CONFIG_SETTING_ON : STR_CONFIG_SETTING_OFF);
 	} else {
 		if ((this->flags & SF_GUI_DROPDOWN) != 0) {
-			SetDParam(first_param++, this->str_val - this->min + value);
+			SetDParam(first_param++, this->str_val - min_val + value);
 		} else {
 			SetDParam(first_param++, this->str_val + ((value == 0 && (this->flags & SF_GUI_0_IS_SPECIAL) != 0) ? 1 : 0));
 		}
@@ -482,6 +483,15 @@ int32_t IntSettingDesc::GetDefaultValue() const
 	return this->get_def_cb != nullptr ? this->get_def_cb(*this) : this->def;
 }
 
+/**
+ * Get the min/max range for the setting.
+ * @return The min/max range.
+ */
+std::tuple<int32_t, uint32_t> IntSettingDesc::GetRange() const
+{
+	return this->get_range_cb != nullptr ? this->get_range_cb(*this) : std::tuple(this->min, this->max);
+}
+
 /**
  * Make the value valid and then write it to the setting.
  * See #MakeValidValid and #Write for more details.
@@ -505,6 +515,7 @@ void IntSettingDesc::MakeValueValidAndWrite(const void *object, int32_t val) con
  */
 void IntSettingDesc::MakeValueValid(int32_t &val) const
 {
+	auto [min_val, max_val] = this->GetRange();
 	/* We need to take special care of the uint32_t type as we receive from the function
 	 * a signed integer. While here also bail out on 64-bit settings as those are not
 	 * supported. Unsigned 8 and 16-bit variables are safe since they fit into a signed
@@ -522,8 +533,8 @@ void IntSettingDesc::MakeValueValid(int32_t &val) const
 			if (!(this->flags & SF_GUI_0_IS_SPECIAL) || val != 0) {
 				if (!(this->flags & SF_GUI_DROPDOWN)) {
 					/* Clamp value-type setting to its valid range */
-					val = Clamp(val, this->min, this->max);
-				} else if (val < this->min || val > (int32_t)this->max) {
+					val = Clamp(val, min_val, max_val);
+				} else if (val < min_val || val > static_cast<int32_t>(max_val)) {
 					/* Reset invalid discrete setting (where different values change gameplay) to its default value */
 					val = this->GetDefaultValue();
 				}
@@ -532,17 +543,17 @@ void IntSettingDesc::MakeValueValid(int32_t &val) const
 		}
 		case SLE_VAR_U32: {
 			/* Override the minimum value. No value below this->min, except special value 0 */
-			uint32_t uval = (uint32_t)val;
+			uint32_t uval = static_cast<uint32_t>(val);
 			if (!(this->flags & SF_GUI_0_IS_SPECIAL) || uval != 0) {
 				if (!(this->flags & SF_GUI_DROPDOWN)) {
 					/* Clamp value-type setting to its valid range */
-					uval = ClampU(uval, this->min, this->max);
-				} else if (uval < (uint)this->min || uval > this->max) {
+					uval = ClampU(uval, min_val, max_val);
+				} else if (uval < static_cast<uint32_t>(min_val) || uval > max_val) {
 					/* Reset invalid discrete setting to its default value */
-					uval = (uint32_t)this->GetDefaultValue();
+					uval = static_cast<uint32_t>(this->GetDefaultValue());
 				}
 			}
-			val = (int32_t)uval;
+			val = static_cast<int32_t>(uval);
 			return;
 		}
 		case SLE_VAR_I64:
@@ -1918,8 +1929,9 @@ void IConsoleGetSetting(const char *name, bool force_newgame)
 	} else if (sd->IsIntSetting()) {
 		std::string value = sd->FormatValue(object);
 		const IntSettingDesc *int_setting = sd->AsIntSetting();
+		auto [min_val, max_val] = int_setting->GetRange();
 		IConsolePrint(CC_INFO, "Current value for '{}' is '{}' (min: {}{}, max: {}).",
-			sd->GetName(), value, (sd->flags & SF_GUI_0_IS_SPECIAL) ? "(0) " : "", int_setting->min, int_setting->max);
+			sd->GetName(), value, (sd->flags & SF_GUI_0_IS_SPECIAL) ? "(0) " : "", min_val, max_val);
 	}
 }
 
diff --git a/src/settings_gui.cpp b/src/settings_gui.cpp
index f5c166d0ac..a37aa1fb1d 100644
--- a/src/settings_gui.cpp
+++ b/src/settings_gui.cpp
@@ -1621,6 +1621,7 @@ void SettingEntry::DrawSetting(GameSettings *settings_ptr, int left, int right,
 	bool editable = sd->IsEditable();
 
 	SetDParam(0, STR_CONFIG_SETTING_VALUE);
+	auto [min_val, max_val] = sd->GetRange();
 	int32_t value = sd->Read(ResolveObject(settings_ptr, sd));
 	if (sd->IsBoolSetting()) {
 		/* Draw checkbox for boolean-value either on/off */
@@ -1631,7 +1632,7 @@ void SettingEntry::DrawSetting(GameSettings *settings_ptr, int left, int right,
 	} else {
 		/* Draw [<][>] boxes for settings of an integer-type */
 		DrawArrowButtons(buttons_left, button_y, COLOUR_YELLOW, state,
-				editable && value != (sd->flags & SF_GUI_0_IS_SPECIAL ? 0 : sd->min), editable && (uint32_t)value != sd->max);
+				editable && value != (sd->flags & SF_GUI_0_IS_SPECIAL ? 0 : min_val), editable && static_cast<uint32_t>(value) != max_val);
 	}
 	sd->SetValueDParams(1, value);
 	DrawString(text_left, text_right, y + (SETTING_HEIGHT - GetCharacterHeight(FS_NORMAL)) / 2, sd->GetTitle(), highlight ? TC_WHITE : TC_LIGHT_BLUE);
@@ -2607,6 +2608,7 @@ struct GameSettingsWindow : Window {
 			return;
 		}
 
+		auto [min_val, max_val] = sd->GetRange();
 		int32_t value = sd->Read(ResolveObject(settings_ptr, sd));
 
 		/* clicked on the icon on the left side. Either scroller, bool on/off or dropdown */
@@ -2638,7 +2640,7 @@ struct GameSettingsWindow : Window {
 					this->valuedropdown_entry->SetButtons(SEF_LEFT_DEPRESSED);
 
 					DropDownList list;
-					for (int i = sd->min; i <= (int)sd->max; i++) {
+					for (int32_t i = min_val; i <= static_cast<int32_t>(max_val); i++) {
 						sd->SetValueDParams(0, i);
 						list.push_back(MakeDropDownListStringItem(STR_JUST_STRING2, i));
 					}
@@ -2658,7 +2660,7 @@ struct GameSettingsWindow : Window {
 				 * 50-steps you should be able to get from min to max,
 				 * unless specified otherwise in the 'interval' variable
 				 * of the current setting. */
-				uint32_t step = (sd->interval == 0) ? ((sd->max - sd->min) / 50) : sd->interval;
+				uint32_t step = (sd->interval == 0) ? ((max_val - min_val) / 50) : sd->interval;
 				if (step == 0) step = 1;
 
 				/* don't allow too fast scrolling */
@@ -2670,16 +2672,16 @@ struct GameSettingsWindow : Window {
 				/* Increase or decrease the value and clamp it to extremes */
 				if (x >= SETTING_BUTTON_WIDTH / 2) {
 					value += step;
-					if (sd->min < 0) {
-						assert((int32_t)sd->max >= 0);
-						if (value > (int32_t)sd->max) value = (int32_t)sd->max;
+					if (min_val < 0) {
+						assert(static_cast<int32_t>(max_val) >= 0);
+						if (value > static_cast<int32_t>(max_val)) value = static_cast<int32_t>(max_val);
 					} else {
-						if ((uint32_t)value > sd->max) value = (int32_t)sd->max;
+						if (static_cast<uint32_t>(value) > max_val) value = static_cast<int32_t>(max_val);
 					}
-					if (value < sd->min) value = sd->min; // skip between "disabled" and minimum
+					if (value < min_val) value = min_val; // skip between "disabled" and minimum
 				} else {
 					value -= step;
-					if (value < sd->min) value = (sd->flags & SF_GUI_0_IS_SPECIAL) ? 0 : sd->min;
+					if (value < min_val) value = (sd->flags & SF_GUI_0_IS_SPECIAL) ? 0 : min_val;
 				}
 
 				/* Set up scroller timeout for numeric values */
@@ -2706,7 +2708,7 @@ struct GameSettingsWindow : Window {
 				if (sd->flags & SF_GUI_CURRENCY) value64 *= GetCurrency().rate;
 
 				CharSetFilter charset_filter = CS_NUMERAL; //default, only numeric input allowed
-				if (sd->min < 0) charset_filter = CS_NUMERAL_SIGNED; // special case, also allow '-' sign for negative input
+				if (min_val < 0) charset_filter = CS_NUMERAL_SIGNED; // special case, also allow '-' sign for negative input
 
 				this->valuewindow_entry = pe;
 				SetDParam(0, value64);
diff --git a/src/settings_internal.h b/src/settings_internal.h
index bad51456dd..73801837db 100644
--- a/src/settings_internal.h
+++ b/src/settings_internal.h
@@ -151,6 +151,7 @@ struct IntSettingDesc : SettingDesc {
 	typedef StringID GetHelpCallback(const IntSettingDesc &sd);
 	typedef void SetValueDParamsCallback(const IntSettingDesc &sd, uint first_param, int32_t value);
 	typedef int32_t GetDefaultValueCallback(const IntSettingDesc &sd);
+	typedef std::tuple<int32_t, uint32_t> GetRangeCallback(const IntSettingDesc &sd);
 
 	/**
 	 * A check to be performed before the setting gets changed. The passed integer may be
@@ -181,12 +182,12 @@ struct IntSettingDesc : SettingDesc {
 			Tmin min, Tmax max, Tinterval interval, StringID str, StringID str_help, StringID str_val,
 			SettingCategory cat, PreChangeCheck pre_check, PostChangeCallback post_callback,
 			GetTitleCallback get_title_cb, GetHelpCallback get_help_cb, SetValueDParamsCallback set_value_dparams_cb,
-			GetDefaultValueCallback get_def_cb) :
+			GetDefaultValueCallback get_def_cb, GetRangeCallback get_range_cb) :
 		SettingDesc(save, flags, startup),
 			str(str), str_help(str_help), str_val(str_val), cat(cat), pre_check(pre_check),
 			post_callback(post_callback),
 			get_title_cb(get_title_cb), get_help_cb(get_help_cb), set_value_dparams_cb(set_value_dparams_cb),
-			get_def_cb(get_def_cb) {
+			get_def_cb(get_def_cb), get_range_cb(get_range_cb) {
 		if constexpr (std::is_base_of_v<StrongTypedefBase, Tdef>) {
 			this->def = def.base();
 		} else {
@@ -226,11 +227,13 @@ struct IntSettingDesc : SettingDesc {
 	GetHelpCallback *get_help_cb;
 	SetValueDParamsCallback *set_value_dparams_cb;
 	GetDefaultValueCallback *get_def_cb; ///< Callback to set the correct default value
+	GetRangeCallback *get_range_cb;
 
 	StringID GetTitle() const;
 	StringID GetHelp() const;
 	void SetValueDParams(uint first_param, int32_t value) const;
 	int32_t GetDefaultValue() const;
+	std::tuple<int32_t, uint32_t> GetRange() const;
 
 	/**
 	 * Check whether this setting is a boolean type setting.
@@ -263,7 +266,7 @@ struct BoolSettingDesc : IntSettingDesc {
 			GetTitleCallback get_title_cb, GetHelpCallback get_help_cb, SetValueDParamsCallback set_value_dparams_cb,
 			GetDefaultValueCallback get_def_cb) :
 		IntSettingDesc(save, flags, startup, def ? 1 : 0, 0, 1, 0, str, str_help, str_val, cat,
-			pre_check, post_callback, get_title_cb, get_help_cb, set_value_dparams_cb, get_def_cb) {}
+			pre_check, post_callback, get_title_cb, get_help_cb, set_value_dparams_cb, get_def_cb, nullptr) {}
 
 	static std::optional<bool> ParseSingleValue(const char *str);
 
@@ -282,7 +285,7 @@ struct OneOfManySettingDesc : IntSettingDesc {
 			GetTitleCallback get_title_cb, GetHelpCallback get_help_cb, SetValueDParamsCallback set_value_dparams_cb,
 			GetDefaultValueCallback get_def_cb, std::initializer_list<const char *> many, OnConvert *many_cnvt) :
 		IntSettingDesc(save, flags, startup, def, 0, max, 0, str, str_help, str_val, cat,
-			pre_check, post_callback, get_title_cb, get_help_cb, set_value_dparams_cb, get_def_cb), many_cnvt(many_cnvt)
+			pre_check, post_callback, get_title_cb, get_help_cb, set_value_dparams_cb, get_def_cb, nullptr), many_cnvt(many_cnvt)
 	{
 		for (auto one : many) this->many.push_back(one);
 	}
diff --git a/src/table/settings.h.preamble b/src/table/settings.h.preamble
index 464ccfe853..a9006f3078 100644
--- a/src/table/settings.h.preamble
+++ b/src/table/settings.h.preamble
@@ -58,8 +58,8 @@ static StringID SettingHelpWallclock(const IntSettingDesc &sd);
 
 /* Macros for various objects to go in the configuration file.
  * This section is for global variables */
-#define SDTG_VAR(name, type, flags, var, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)\
-	NSD(Int, SLEG_GENERAL(name, SL_VAR, var, type, 1, from, to, extra), flags, startup, def, min, max, interval, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook)
+#define SDTG_VAR(name, type, flags, var, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, get_range_hook, from, to, cat, extra, startup)\
+	NSD(Int, SLEG_GENERAL(name, SL_VAR, var, type, 1, from, to, extra), flags, startup, def, min, max, interval, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, get_range_hook)
 
 #define SDTG_BOOL(name, flags, var, def, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)\
 	NSD(Bool, SLEG_GENERAL(name, SL_VAR, var, SLE_BOOL, 1, from, to, extra), flags, startup, def, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook)
@@ -78,8 +78,8 @@ static StringID SettingHelpWallclock(const IntSettingDesc &sd);
 
 /* Macros for various objects to go in the configuration file.
  * This section is for structures where their various members are saved */
-#define SDT_VAR(base, var, type, flags, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)\
-	NSD(Int, SLE_GENERAL(SL_VAR, base, var, type, 1, from, to, extra), flags, startup, def, min, max, interval, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook)
+#define SDT_VAR(base, var, type, flags, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, get_range_hook, from, to, cat, extra, startup)\
+	NSD(Int, SLE_GENERAL(SL_VAR, base, var, type, 1, from, to, extra), flags, startup, def, min, max, interval, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, get_range_hook)
 
 #define SDT_VAR_NAME(base, var, type, flags, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup, name)\
 	NSD(Int, SLE_GENERAL_NAME(SL_VAR, name, base, var, type, 1, from, to, extra), flags, startup, def, min, max, interval, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook)
@@ -100,8 +100,8 @@ static StringID SettingHelpWallclock(const IntSettingDesc &sd);
 	NSD(ManyOfMany, SLE_GENERAL(SL_VAR, base, var, type, 1, from, to, extra), flags, startup, def, str, strhelp, strval, cat, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, full, nullptr)
 
 
-#define SDTC_VAR(var, type, flags, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)\
-	SDTG_VAR(#var, type, flags, _settings_client.var, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)
+#define SDTC_VAR(var, type, flags, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, get_range_hook, from, to, cat, extra, startup)\
+	SDTG_VAR(#var, type, flags, _settings_client.var, def, min, max, interval, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, get_range_hook, from, to, cat, extra, startup)
 
 #define SDTC_BOOL(var, flags, def, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)\
 	SDTG_BOOL(#var, flags, _settings_client.var, def, str, strhelp, strval, pre_check, post_callback, get_title_hook, get_help_hook, set_value_dparams_hook, get_def_hook, from, to, cat, extra, startup)
diff --git a/src/table/settings/company_settings.ini b/src/table/settings/company_settings.ini
index 6e2b547922..2f84637cba 100644
--- a/src/table/settings/company_settings.ini
+++ b/src/table/settings/company_settings.ini
@@ -20,7 +20,7 @@ static const SettingVariant _company_settings_table[] = {
 };
 [templates]
 SDT_BOOL = SDT_BOOL(CompanySettings, $var,        $flags, $def,                        $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
-SDT_VAR  =  SDT_VAR(CompanySettings, $var, $type, $flags, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
+SDT_VAR  =  SDT_VAR(CompanySettings, $var, $type, $flags, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to, $cat, $extra, $startup),
 
 [validation]
 SDT_VAR = static_assert($max <= MAX_$type, "Maximum value for CompanySettings.$var exceeds storage size");
@@ -37,6 +37,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/currency_settings.ini b/src/table/settings/currency_settings.ini
index 2bc3c2328a..4a749c820a 100644
--- a/src/table/settings/currency_settings.ini
+++ b/src/table/settings/currency_settings.ini
@@ -11,7 +11,7 @@ static const SettingVariant _currency_settings_table[] = {
 [post-amble]
 };
 [templates]
-SDT_VAR  = SDT_VAR (CurrencySpec, $var, $type, $flags, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
+SDT_VAR  = SDT_VAR (CurrencySpec, $var, $type, $flags, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to, $cat, $extra, $startup),
 SDT_SSTR = SDT_SSTR(CurrencySpec, $var, $type, $flags, $def,                                                 $pre_cb, $post_cb, $from, $to, $cat, $extra, $startup),
 
 [validation]
@@ -29,6 +29,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/difficulty_settings.ini b/src/table/settings/difficulty_settings.ini
index 2b99c563f5..510d552f39 100644
--- a/src/table/settings/difficulty_settings.ini
+++ b/src/table/settings/difficulty_settings.ini
@@ -20,9 +20,9 @@ static const SettingVariant _difficulty_settings_table[] = {
 [post-amble]
 };
 [templates]
-SDTG_VAR   =   SDTG_VAR($name,              $type, $flags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDTG_VAR   =   SDTG_VAR($name,              $type, $flags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 SDT_BOOL   =   SDT_BOOL(GameSettings, $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
-SDT_VAR    =   SDT_VAR (GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =   SDT_VAR (GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDTG_VAR = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -40,6 +40,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/economy_settings.ini b/src/table/settings/economy_settings.ini
index 7024082811..53d202703d 100644
--- a/src/table/settings/economy_settings.ini
+++ b/src/table/settings/economy_settings.ini
@@ -17,7 +17,7 @@ static const SettingVariant _economy_settings_table[] = {
 };
 [templates]
 SDT_BOOL   =   SDT_BOOL(GameSettings, $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
-SDT_VAR    =   SDT_VAR (GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =   SDT_VAR (GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDT_VAR = static_assert($max <= MAX_$type, "Maximum value for GameSettings.$var exceeds storage size");
@@ -34,6 +34,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/game_settings.ini b/src/table/settings/game_settings.ini
index c29bf636ab..88646ca815 100644
--- a/src/table/settings/game_settings.ini
+++ b/src/table/settings/game_settings.ini
@@ -27,11 +27,11 @@ static const SettingVariant _game_settings_table[] = {
 };
 [templates]
 SDTG_BOOL  =  SDTG_BOOL($name,                     $flags, $var, $def,                        $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
-SDTG_VAR   =   SDTG_VAR($name,              $type, $flags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDTG_VAR   =   SDTG_VAR($name,              $type, $flags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 SDTC_BOOL  =  SDTC_BOOL(              $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDT_BOOL   =   SDT_BOOL(GameSettings, $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDT_OMANY  =  SDT_OMANY(GameSettings, $var, $type, $flags, $def,             $max, $full,     $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $load, $cat, $extra, $startup),
-SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDTG_VAR = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -50,6 +50,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/gui_settings.ini b/src/table/settings/gui_settings.ini
index 78dadf1c44..edac87e2b9 100644
--- a/src/table/settings/gui_settings.ini
+++ b/src/table/settings/gui_settings.ini
@@ -27,7 +27,7 @@ static const SettingVariant _gui_settings_table[] = {
 [templates]
 SDTC_BOOL  =  SDTC_BOOL(              $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDTC_OMANY = SDTC_OMANY(              $var, $type, $flags, $def,             $max, $full,     $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
-SDTC_VAR   =   SDTC_VAR(              $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDTC_VAR   =   SDTC_VAR(              $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDTC_OMANY = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -45,6 +45,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/linkgraph_settings.ini b/src/table/settings/linkgraph_settings.ini
index 0d19e7dba6..a7234c1e61 100644
--- a/src/table/settings/linkgraph_settings.ini
+++ b/src/table/settings/linkgraph_settings.ini
@@ -12,7 +12,7 @@ static const SettingVariant _linkgraph_settings_table[] = {
 [post-amble]
 };
 [templates]
-SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDT_VAR = static_assert($max <= MAX_$type, "Maximum value for GameSettings.$var exceeds storage size");
@@ -29,6 +29,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/misc_settings.ini b/src/table/settings/misc_settings.ini
index 0da92b33bd..45051908e0 100644
--- a/src/table/settings/misc_settings.ini
+++ b/src/table/settings/misc_settings.ini
@@ -29,7 +29,7 @@ SDTG_MMANY = SDTG_MMANY($name, $type, $flags, $var, $def,
 SDTG_OMANY = SDTG_OMANY($name, $type, $flags, $var, $def,       $max,            $full, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
 SDTG_SSTR  =  SDTG_SSTR($name, $type, $flags, $var, $def,       0,                                               $pre_cb, $post_cb, $from, $to, $cat, $extra, $startup),
 SDTG_BOOL  =  SDTG_BOOL($name,        $flags, $var, $def,                               $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
-SDTG_VAR   =   SDTG_VAR($name, $type, $flags, $var, $def, $min, $max, $interval,        $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
+SDTG_VAR   =   SDTG_VAR($name, $type, $flags, $var, $def, $min, $max, $interval,        $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to, $cat, $extra, $startup),
 
 [validation]
 SDTG_VAR = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -47,6 +47,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/multimedia_settings.ini b/src/table/settings/multimedia_settings.ini
index 8d766a62d6..98e0cdcf1e 100644
--- a/src/table/settings/multimedia_settings.ini
+++ b/src/table/settings/multimedia_settings.ini
@@ -14,7 +14,7 @@ static const SettingVariant _multimedia_settings_table[] = {
 [templates]
 SDTC_BOOL  =  SDTC_BOOL(              $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDTC_LIST  =  SDTC_LIST(              $var, $type, $flags, $def,                                                                          $from, $to,        $cat, $extra, $startup),
-SDTC_VAR   =   SDTC_VAR(              $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDTC_VAR   =   SDTC_VAR(              $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDTC_VAR = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -31,6 +31,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/network_settings.ini b/src/table/settings/network_settings.ini
index 8514492843..54cac2b5a3 100644
--- a/src/table/settings/network_settings.ini
+++ b/src/table/settings/network_settings.ini
@@ -18,7 +18,7 @@ static const SettingVariant _network_settings_table[] = {
 [templates]
 SDTC_BOOL  =  SDTC_BOOL(              $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDTC_OMANY = SDTC_OMANY(              $var, $type, $flags, $def,             $max, $full,     $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
-SDTC_VAR   =   SDTC_VAR(              $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDTC_VAR   =   SDTC_VAR(              $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDTC_OMANY = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -36,6 +36,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/old_gameopt_settings.ini b/src/table/settings/old_gameopt_settings.ini
index 4daf62a57c..1786302d6e 100644
--- a/src/table/settings/old_gameopt_settings.ini
+++ b/src/table/settings/old_gameopt_settings.ini
@@ -31,12 +31,12 @@ static const SettingVariant _old_gameopt_settings_table[] = {
 };
 [templates]
 SDTG_LIST    =  SDTG_LIST($name,              $type, $flags, $var, $def, $length, $from, $to, $cat, $extra, $startup),
-SDTG_VAR     =   SDTG_VAR($name,              $type, $flags, $var, $def, $min, $max, $interval,  $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
+SDTG_VAR     =   SDTG_VAR($name,              $type, $flags, $var, $def, $min, $max, $interval,  $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to, $cat, $extra, $startup),
 SDT_NULL     =   SDT_NULL(                                                          $length,                                                                                      $from, $to),
 SDTC_OMANY   = SDTC_OMANY(              $var, $type, $flags, $def,       $max, $full,            $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDTG_OMANY   = SDTG_OMANY($name,              $type, $flags, $var, $def, $max, $full,            $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDT_OMANY    =  SDT_OMANY(GameSettings, $var, $type, $flags, $def,       $max, $full,            $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $load, $cat, $extra, $startup),
-SDT_VAR      =    SDT_VAR(GameSettings, $var, $type, $flags, $def, $min, $max,        $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR      =    SDT_VAR(GameSettings, $var, $type, $flags, $def, $min, $max,        $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDTG_VAR = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -57,6 +57,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/pathfinding_settings.ini b/src/table/settings/pathfinding_settings.ini
index 8d7521b661..ef7f91185d 100644
--- a/src/table/settings/pathfinding_settings.ini
+++ b/src/table/settings/pathfinding_settings.ini
@@ -13,7 +13,7 @@ static const SettingVariant _pathfinding_settings_table[] = {
 };
 [templates]
 SDT_BOOL   =   SDT_BOOL(GameSettings, $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
-SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDT_VAR = static_assert($max <= MAX_$type, "Maximum value for GameSettings.$var exceeds storage size");
@@ -30,6 +30,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/script_settings.ini b/src/table/settings/script_settings.ini
index 9affe3e61b..bf25847b9c 100644
--- a/src/table/settings/script_settings.ini
+++ b/src/table/settings/script_settings.ini
@@ -15,7 +15,7 @@ static const SettingVariant _script_settings_table[] = {
 [templates]
 SDT_BOOL   =   SDT_BOOL(GameSettings, $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDT_OMANY  =  SDT_OMANY(GameSettings, $var, $type, $flags, $def,             $max, $full,     $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $load, $cat, $extra, $startup),
-SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDT_OMANY = static_assert($max <= MAX_$type, "Maximum value for GameSettings.$var exceeds storage size");
@@ -33,6 +33,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/win32_settings.ini b/src/table/settings/win32_settings.ini
index d54f10e109..fbf949fe0d 100644
--- a/src/table/settings/win32_settings.ini
+++ b/src/table/settings/win32_settings.ini
@@ -18,7 +18,7 @@ static const SettingVariant _win32_settings_table[] = {
 #endif /* _WIN32 */
 [templates]
 SDTG_BOOL = SDTG_BOOL($name,        $flags, $var, $def,                        $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
-SDTG_VAR  =  SDTG_VAR($name, $type, $flags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
+SDTG_VAR  =  SDTG_VAR($name, $type, $flags, $var, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to, $cat, $extra, $startup),
 
 [validation]
 SDTG_VAR = static_assert($max <= MAX_$type, "Maximum value for $var exceeds storage size");
@@ -35,6 +35,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/window_settings.ini b/src/table/settings/window_settings.ini
index 4984abe200..6da3c6ab17 100644
--- a/src/table/settings/window_settings.ini
+++ b/src/table/settings/window_settings.ini
@@ -14,7 +14,7 @@ static const SettingVariant _window_settings_table[] = {
 };
 [templates]
 SDT_BOOL = SDT_BOOL(WindowDesc, $var,        $flags, $def,                        $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
-SDT_VAR  =  SDT_VAR(WindowDesc, $var, $type, $flags, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $cat, $extra, $startup),
+SDT_VAR  =  SDT_VAR(WindowDesc, $var, $type, $flags, $def, $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to, $cat, $extra, $startup),
 
 [validation]
 SDT_VAR = static_assert($max <= MAX_$type, "Maximum value for WindowDesc.$var exceeds storage size");
@@ -31,6 +31,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION
diff --git a/src/table/settings/world_settings.ini b/src/table/settings/world_settings.ini
index 6b5d1466e0..ab30a3e500 100644
--- a/src/table/settings/world_settings.ini
+++ b/src/table/settings/world_settings.ini
@@ -20,7 +20,7 @@ static const SettingVariant _world_settings_table[] = {
 [templates]
 SDT_BOOL   =   SDT_BOOL(GameSettings, $var,        $flags, $def,                              $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
 SDT_OMANY  =  SDT_OMANY(GameSettings, $var, $type, $flags, $def,             $max, $full,     $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to, $load, $cat, $extra, $startup),
-SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $from, $to,        $cat, $extra, $startup),
+SDT_VAR    =    SDT_VAR(GameSettings, $var, $type, $flags, $def,       $min, $max, $interval, $str, $strhelp, $strval, $pre_cb, $post_cb, $str_cb, $help_cb, $val_cb, $def_cb, $range_cb, $from, $to,        $cat, $extra, $startup),
 
 [validation]
 SDT_OMANY = static_assert($max <= MAX_$type, "Maximum value for GameSettings.$var exceeds storage size");
@@ -38,6 +38,7 @@ str_cb   = nullptr
 help_cb  = nullptr
 val_cb   = nullptr
 def_cb   = nullptr
+range_cb = nullptr
 load     = nullptr
 from     = SL_MIN_VERSION
 to       = SL_MAX_VERSION