diff --git a/src/animated_tile.cpp b/src/animated_tile.cpp
--- a/src/animated_tile.cpp
+++ b/src/animated_tile.cpp
@@ -75,5 +75,5 @@ void AnimateAnimatedTiles()
  */
 void InitializeAnimatedTiles()
 {
-	_animated_tiles.Clear();
+	_animated_tiles.clear();
 }
diff --git a/src/autoreplace_gui.cpp b/src/autoreplace_gui.cpp
--- a/src/autoreplace_gui.cpp
+++ b/src/autoreplace_gui.cpp
@@ -123,7 +123,7 @@ class ReplaceVehicleWindow : public Wind
 		byte side = draw_left ? 0 : 1;
 
 		GUIEngineList *list = &this->engines[side];
-		list->Clear();
+		list->clear();
 
 		const Engine *e;
 		FOR_ALL_ENGINES_OF_TYPE(e, type) {
@@ -170,7 +170,7 @@ class ReplaceVehicleWindow : public Wind
 			/* Either we got a request to rebuild the right engines list, or the left engines list selected a different engine */
 			if (this->sel_engine[0] == INVALID_ENGINE) {
 				/* Always empty the right engines list when nothing is selected in the left engines list */
-				this->engines[1].Clear();
+				this->engines[1].clear();
 				this->sel_engine[1] = INVALID_ENGINE;
 			} else {
 				if (this->reset_sel_engine && this->sel_engine[0] != INVALID_ENGINE) {
diff --git a/src/build_vehicle_gui.cpp b/src/build_vehicle_gui.cpp
--- a/src/build_vehicle_gui.cpp
+++ b/src/build_vehicle_gui.cpp
@@ -1228,7 +1228,7 @@ struct BuildVehicleWindow : Window {
 
 		this->filter.railtype = (this->listview_mode) ? RAILTYPE_END : GetRailType(this->window_number);
 
-		this->eng_list.Clear();
+		this->eng_list.clear();
 
 		/* Make list of all available train engines and wagons.
 		 * Also check to see if the previously selected engine is still available,
@@ -1276,7 +1276,7 @@ struct BuildVehicleWindow : Window {
 	{
 		EngineID sel_id = INVALID_ENGINE;
 
-		this->eng_list.Clear();
+		this->eng_list.clear();
 
 		const Engine *e;
 		FOR_ALL_ENGINES_OF_TYPE(e, VEH_ROAD) {
@@ -1295,7 +1295,7 @@ struct BuildVehicleWindow : Window {
 	void GenerateBuildShipList()
 	{
 		EngineID sel_id = INVALID_ENGINE;
-		this->eng_list.Clear();
+		this->eng_list.clear();
 
 		const Engine *e;
 		FOR_ALL_ENGINES_OF_TYPE(e, VEH_SHIP) {
@@ -1314,7 +1314,7 @@ struct BuildVehicleWindow : Window {
 	{
 		EngineID sel_id = INVALID_ENGINE;
 
-		this->eng_list.Clear();
+		this->eng_list.clear();
 
 		const Station *st = this->listview_mode ? NULL : Station::GetByTile(this->window_number);
 
diff --git a/src/command.cpp b/src/command.cpp
--- a/src/command.cpp
+++ b/src/command.cpp
@@ -469,7 +469,7 @@ CommandCost DoCommand(TileIndex tile, ui
 
 	/* only execute the test call if it's toplevel, or we're not execing. */
 	if (_docommand_recursive == 1 || !(flags & DC_EXEC) ) {
-		if (_docommand_recursive == 1) _cleared_object_areas.Clear();
+		if (_docommand_recursive == 1) _cleared_object_areas.clear();
 		SetTownRatingTestMode(true);
 		res = proc(tile, flags & ~DC_EXEC, p1, p2, text);
 		SetTownRatingTestMode(false);
@@ -492,7 +492,7 @@ CommandCost DoCommand(TileIndex tile, ui
 
 	/* Execute the command here. All cost-relevant functions set the expenses type
 	 * themselves to the cost object at some point */
-	if (_docommand_recursive == 1) _cleared_object_areas.Clear();
+	if (_docommand_recursive == 1) _cleared_object_areas.clear();
 	res = proc(tile, flags, p1, p2, text);
 	if (res.Failed()) {
 error:
@@ -666,7 +666,7 @@ CommandCost DoCommandPInternal(TileIndex
 	bool test_and_exec_can_differ = (cmd_flags & CMD_NO_TEST) != 0;
 
 	/* Test the command. */
-	_cleared_object_areas.Clear();
+	_cleared_object_areas.clear();
 	SetTownRatingTestMode(true);
 	BasePersistentStorageArray::SwitchMode(PSM_ENTER_TESTMODE);
 	CommandCost res = proc(tile, flags, p1, p2, text);
@@ -710,7 +710,7 @@ CommandCost DoCommandPInternal(TileIndex
 
 	/* Actually try and execute the command. If no cost-type is given
 	 * use the construction one */
-	_cleared_object_areas.Clear();
+	_cleared_object_areas.clear();
 	BasePersistentStorageArray::SwitchMode(PSM_ENTER_COMMAND);
 	CommandCost res2 = proc(tile, flags | DC_EXEC, p1, p2, text);
 	BasePersistentStorageArray::SwitchMode(PSM_LEAVE_COMMAND);
diff --git a/src/company_gui.cpp b/src/company_gui.cpp
--- a/src/company_gui.cpp
+++ b/src/company_gui.cpp
@@ -652,8 +652,8 @@ private:
 	{
 		if (!this->groups.NeedRebuild()) return;
 
-		this->groups.Clear();
-		this->indents.Clear();
+		this->groups.clear();
+		this->indents.clear();
 
 		if (this->livery_class >= LC_GROUP_RAIL) {
 			GUIGroupList list;
diff --git a/src/core/smallvec_type.hpp b/src/core/smallvec_type.hpp
--- a/src/core/smallvec_type.hpp
+++ b/src/core/smallvec_type.hpp
@@ -78,14 +78,6 @@ public:
 	}
 
 	/**
-	 * Remove all items from the list.
-	 */
-	inline void Clear()
-	{
-		std::vector<T>::clear();
-	}
-
-	/**
 	 * Remove all items from the list and free allocated memory.
 	 */
 	inline void Reset()
diff --git a/src/economy.cpp b/src/economy.cpp
--- a/src/economy.cpp
+++ b/src/economy.cpp
@@ -1949,7 +1949,7 @@ void LoadUnloadStation(Station *st)
 	for (Industry **iid = _cargo_delivery_destinations.Begin(); iid != isend; iid++) {
 		TriggerIndustryProduction(*iid);
 	}
-	_cargo_delivery_destinations.Clear();
+	_cargo_delivery_destinations.clear();
 }
 
 /**
diff --git a/src/engine.cpp b/src/engine.cpp
--- a/src/engine.cpp
+++ b/src/engine.cpp
@@ -487,7 +487,7 @@ StringID Engine::GetAircraftTypeText() c
  */
 void EngineOverrideManager::ResetToDefaultMapping()
 {
-	this->Clear();
+	this->clear();
 	for (VehicleType type = VEH_TRAIN; type <= VEH_AIRCRAFT; type++) {
 		for (uint internal_id = 0; internal_id < _engine_counts[type]; internal_id++) {
 			EngineIDMapping *eid = this->Append();
diff --git a/src/fios.h b/src/fios.h
--- a/src/fios.h
+++ b/src/fios.h
@@ -185,7 +185,7 @@ public:
 	/** Remove all items from the list. */
 	inline void Clear()
 	{
-		this->files.Clear();
+		this->files.clear();
 	}
 
 	/** Compact the list down to the smallest block size boundary. */
diff --git a/src/fios_gui.cpp b/src/fios_gui.cpp
--- a/src/fios_gui.cpp
+++ b/src/fios_gui.cpp
@@ -61,7 +61,7 @@ void LoadCheckData::Clear()
 	for (CompanyPropertiesMap::iterator it = this->companies.Begin(); it != end; it++) {
 		delete it->second;
 	}
-	companies.Clear();
+	companies.clear();
 
 	GamelogFree(this->gamelog_action, this->gamelog_actions);
 	this->gamelog_action = NULL;
diff --git a/src/gfx_layout.cpp b/src/gfx_layout.cpp
--- a/src/gfx_layout.cpp
+++ b/src/gfx_layout.cpp
@@ -600,7 +600,7 @@ static inline void GetLayouter(Layouter:
 	Font *f = Layouter::GetFont(state.fontsize, state.cur_colour);
 
 	line.buffer = buff_begin;
-	fontMapping.Clear();
+	fontMapping.clear();
 
 	/*
 	 * Go through the whole string while adding Font instances to the font map
@@ -847,7 +847,7 @@ void Layouter::ResetFontCache(FontSize s
 	for (FontColourMap::iterator it = fonts[size].Begin(); it != fonts[size].End(); ++it) {
 		delete it->second;
 	}
-	fonts[size].Clear();
+	fonts[size].clear();
 
 	/* We must reset the linecache since it references the just freed fonts */
 	ResetLineCache();
diff --git a/src/graph_gui.cpp b/src/graph_gui.cpp
--- a/src/graph_gui.cpp
+++ b/src/graph_gui.cpp
@@ -1136,7 +1136,7 @@ private:
 	{
 		if (!this->companies.NeedRebuild()) return;
 
-		this->companies.Clear();
+		this->companies.clear();
 
 		const Company *c;
 		FOR_ALL_COMPANIES(c) {
diff --git a/src/group_gui.cpp b/src/group_gui.cpp
--- a/src/group_gui.cpp
+++ b/src/group_gui.cpp
@@ -167,8 +167,8 @@ private:
 	{
 		if (!this->groups.NeedRebuild()) return;
 
-		this->groups.Clear();
-		this->indents.Clear();
+		this->groups.clear();
+		this->indents.clear();
 
 		GUIGroupList list;
 
diff --git a/src/hotkeys.cpp b/src/hotkeys.cpp
--- a/src/hotkeys.cpp
+++ b/src/hotkeys.cpp
@@ -273,7 +273,7 @@ void HotkeyList::Load(IniFile *ini)
 	for (Hotkey *hotkey = this->items; hotkey->name != NULL; ++hotkey) {
 		IniItem *item = group->GetItem(hotkey->name, false);
 		if (item != NULL) {
-			hotkey->keycodes.Clear();
+			hotkey->keycodes.clear();
 			if (item->value != NULL) ParseHotkeys(hotkey, item->value);
 		}
 	}
diff --git a/src/industry_gui.cpp b/src/industry_gui.cpp
--- a/src/industry_gui.cpp
+++ b/src/industry_gui.cpp
@@ -1202,7 +1202,7 @@ protected:
 	void BuildSortIndustriesList()
 	{
 		if (this->industries.NeedRebuild()) {
-			this->industries.Clear();
+			this->industries.clear();
 
 			const Industry *i;
 			FOR_ALL_INDUSTRIES(i) {
@@ -2414,7 +2414,7 @@ struct IndustryCargoesWindow : public Wi
 		_displayed_industries.reset();
 		_displayed_industries.set(it);
 
-		this->fields.Clear();
+		this->fields.clear();
 		CargoesRow *row = this->fields.Append();
 		row->columns[0].MakeHeader(STR_INDUSTRY_CARGOES_PRODUCERS);
 		row->columns[1].MakeEmpty(CFT_SMALL_EMPTY);
@@ -2492,7 +2492,7 @@ struct IndustryCargoesWindow : public Wi
 		this->ind_cargo = cid + NUM_INDUSTRYTYPES;
 		_displayed_industries.reset();
 
-		this->fields.Clear();
+		this->fields.clear();
 		CargoesRow *row = this->fields.Append();
 		row->columns[0].MakeHeader(STR_INDUSTRY_CARGOES_PRODUCERS);
 		row->columns[1].MakeEmpty(CFT_SMALL_EMPTY);
diff --git a/src/network/core/tcp_listen.h b/src/network/core/tcp_listen.h
--- a/src/network/core/tcp_listen.h
+++ b/src/network/core/tcp_listen.h
@@ -164,7 +164,7 @@ public:
 		for (SocketList::iterator s = sockets.Begin(); s != sockets.End(); s++) {
 			closesocket(s->second);
 		}
-		sockets.Clear();
+		sockets.clear();
 		DEBUG(net, 1, "[%s] closed listeners", Tsocket::GetName());
 	}
 };
diff --git a/src/network/core/udp.cpp b/src/network/core/udp.cpp
--- a/src/network/core/udp.cpp
+++ b/src/network/core/udp.cpp
@@ -62,7 +62,7 @@ void NetworkUDPSocketHandler::Close()
 	for (SocketList::iterator s = this->sockets.Begin(); s != this->sockets.End(); s++) {
 		closesocket(s->second);
 	}
-	this->sockets.Clear();
+	this->sockets.clear();
 }
 
 NetworkRecvStatus NetworkUDPSocketHandler::CloseConnection(bool error)
diff --git a/src/network/network_content.cpp b/src/network/network_content.cpp
--- a/src/network/network_content.cpp
+++ b/src/network/network_content.cpp
@@ -981,7 +981,7 @@ void ClientNetworkContentSocketHandler::
 		if (c->state != ContentInfo::AUTOSELECTED) continue;
 
 		/* Only unselect when WE are the only parent. */
-		parents.Clear();
+		parents.clear();
 		this->ReverseLookupDependency(parents, c);
 
 		/* First check whether anything depends on us */
@@ -1000,7 +1000,7 @@ void ClientNetworkContentSocketHandler::
 		if (force_selection) continue;
 
 		/* "Flood" search to find all items in the dependency graph*/
-		parents.Clear();
+		parents.clear();
 		this->ReverseLookupTreeDependency(parents, c);
 
 		/* Is there anything that is "force" selected?, if so... we're done. */
@@ -1033,8 +1033,8 @@ void ClientNetworkContentSocketHandler::
 {
 	for (ContentIterator iter = this->infos.Begin(); iter != this->infos.End(); iter++) delete *iter;
 
-	this->infos.Clear();
-	this->requested.Clear();
+	this->infos.clear();
+	this->requested.clear();
 }
 
 /*** CALLBACK ***/
diff --git a/src/network/network_content_gui.cpp b/src/network/network_content_gui.cpp
--- a/src/network/network_content_gui.cpp
+++ b/src/network/network_content_gui.cpp
@@ -385,7 +385,7 @@ class NetworkContentListWindow : public 
 		if (!this->content.NeedRebuild()) return;
 
 		/* Create temporary array of games to use for listing */
-		this->content.Clear();
+		this->content.clear();
 
 		bool all_available = true;
 
diff --git a/src/network/network_gui.cpp b/src/network/network_gui.cpp
--- a/src/network/network_gui.cpp
+++ b/src/network/network_gui.cpp
@@ -250,7 +250,7 @@ protected:
 		if (!this->servers.NeedRebuild()) return;
 
 		/* Create temporary array of games to use for listing */
-		this->servers.Clear();
+		this->servers.clear();
 
 		for (NetworkGameList *ngl = _network_game_list; ngl != NULL; ngl = ngl->next) {
 			*this->servers.Append() = ngl;
diff --git a/src/network/network_udp.cpp b/src/network/network_udp.cpp
--- a/src/network/network_udp.cpp
+++ b/src/network/network_udp.cpp
@@ -668,7 +668,7 @@ void NetworkUDPInitialize()
 	GetBindAddresses(&server, _settings_client.network.server_port);
 	_udp_server_socket = new ServerNetworkUDPSocketHandler(&server);
 
-	server.Clear();
+	server.clear();
 	GetBindAddresses(&server, 0);
 	_udp_master_socket = new MasterNetworkUDPSocketHandler(&server);
 
diff --git a/src/newgrf.cpp b/src/newgrf.cpp
--- a/src/newgrf.cpp
+++ b/src/newgrf.cpp
@@ -1906,7 +1906,7 @@ static ChangeInfoResult StationChangeInf
 					if (_cur.skip_sprites < 0) return CIR_DISABLED;
 
 					static SmallVector<DrawTileSeqStruct, 8> tmp_layout;
-					tmp_layout.Clear();
+					tmp_layout.clear();
 					for (;;) {
 						/* no relative bounding box support */
 						DrawTileSeqStruct *dtss = tmp_layout.Append();
@@ -2591,7 +2591,7 @@ static ChangeInfoResult LoadTranslationT
 		return CIR_INVALID_ID;
 	}
 
-	translation_table.Clear();
+	translation_table.clear();
 	for (int i = 0; i < numinfo; i++) {
 		uint32 item = buf->ReadDWord();
 		*translation_table.Append() = BSWAP32(item);
@@ -4791,7 +4791,7 @@ static void NewSpriteGroup(ByteReader *b
 			}
 
 			static SmallVector<DeterministicSpriteGroupAdjust, 16> adjusts;
-			adjusts.Clear();
+			adjusts.clear();
 
 			/* Loop through the var adjusts. Unfortunately we don't know how many we have
 			 * from the outset, so we shall have to keep reallocing. */
@@ -8246,7 +8246,7 @@ static void ResetNewGRF()
 		delete *file;
 	}
 
-	_grf_files.Clear();
+	_grf_files.clear();
 	_cur.grffile   = NULL;
 }
 
@@ -9332,7 +9332,7 @@ static void AfterLoadGRFs()
 	for (StringIDMapping *it = _string_to_grf_mapping.Begin(); it != _string_to_grf_mapping.End(); it++) {
 		*it->target = MapGRFStringID(it->grfid, it->source);
 	}
-	_string_to_grf_mapping.Clear();
+	_string_to_grf_mapping.clear();
 
 	/* Free the action 6 override sprites. */
 	for (GRFLineToSpriteOverride::iterator it = _grf_line_to_action6_sprite_override.begin(); it != _grf_line_to_action6_sprite_override.end(); it++) {
diff --git a/src/newgrf_commons.cpp b/src/newgrf_commons.cpp
--- a/src/newgrf_commons.cpp
+++ b/src/newgrf_commons.cpp
@@ -661,7 +661,7 @@ void NewGRFSpriteLayout::AllocateRegiste
  */
 uint32 NewGRFSpriteLayout::PrepareLayout(uint32 orig_offset, uint32 newgrf_ground_offset, uint32 newgrf_offset, uint constr_stage, bool separate_ground) const
 {
-	result_seq.Clear();
+	result_seq.clear();
 	uint32 var10_values = 0;
 
 	/* Create a copy of the spritelayout, so we can modify some values.
diff --git a/src/newgrf_gui.cpp b/src/newgrf_gui.cpp
--- a/src/newgrf_gui.cpp
+++ b/src/newgrf_gui.cpp
@@ -1456,7 +1456,7 @@ private:
 	{
 		if (!this->avails.NeedRebuild()) return;
 
-		this->avails.Clear();
+		this->avails.clear();
 
 		for (const GRFConfig *c = _all_grfs; c != NULL; c = c->next) {
 			bool found = false;
diff --git a/src/newgrf_sound.cpp b/src/newgrf_sound.cpp
--- a/src/newgrf_sound.cpp
+++ b/src/newgrf_sound.cpp
@@ -40,7 +40,7 @@ SoundEntry *AllocateSound(uint num)
 
 void InitializeSoundPool()
 {
-	_sounds.Clear();
+	_sounds.clear();
 
 	/* Copy original sound data to the pool */
 	SndCopyToPool();
diff --git a/src/rail_cmd.cpp b/src/rail_cmd.cpp
--- a/src/rail_cmd.cpp
+++ b/src/rail_cmd.cpp
@@ -167,7 +167,7 @@ RailType AllocateRailType(RailTypeLabel 
 			/* Set up new rail type */
 			*rti = _original_railtypes[RAILTYPE_RAIL];
 			rti->label = label;
-			rti->alternate_labels.Clear();
+			rti->alternate_labels.clear();
 
 			/* Make us compatible with ourself. */
 			rti->powered_railtypes    = (RailTypes)(1LL << rt);
diff --git a/src/saveload/afterload.cpp b/src/saveload/afterload.cpp
--- a/src/saveload/afterload.cpp
+++ b/src/saveload/afterload.cpp
@@ -2942,7 +2942,7 @@ bool AfterLoadGame()
 		SmallVector<uint, 16> skip_frames;
 		FOR_ALL_ROADVEHICLES(v) {
 			if (!v->IsFrontEngine()) continue;
-			skip_frames.Clear();
+			skip_frames.clear();
 			TileIndex prev_tile = v->tile;
 			uint prev_tile_skip = 0;
 			uint cur_skip = 0;
diff --git a/src/saveload/animated_tile_sl.cpp b/src/saveload/animated_tile_sl.cpp
--- a/src/saveload/animated_tile_sl.cpp
+++ b/src/saveload/animated_tile_sl.cpp
@@ -48,7 +48,7 @@ static void Load_ANIT()
 	}
 
 	uint count = (uint)SlGetFieldLength() / sizeof(*_animated_tiles.Begin());
-	_animated_tiles.Clear();
+	_animated_tiles.clear();
 	_animated_tiles.Append(count);
 	SlArray(_animated_tiles.Begin(), count, SLE_UINT32);
 }
diff --git a/src/saveload/engine_sl.cpp b/src/saveload/engine_sl.cpp
--- a/src/saveload/engine_sl.cpp
+++ b/src/saveload/engine_sl.cpp
@@ -187,7 +187,7 @@ static void Save_EIDS()
 
 static void Load_EIDS()
 {
-	_engine_mngr.Clear();
+	_engine_mngr.clear();
 
 	while (SlIterateArray() != -1) {
 		EngineIDMapping *eid = _engine_mngr.Append();
diff --git a/src/saveload/labelmaps_sl.cpp b/src/saveload/labelmaps_sl.cpp
--- a/src/saveload/labelmaps_sl.cpp
+++ b/src/saveload/labelmaps_sl.cpp
@@ -81,7 +81,7 @@ void AfterLoadLabelMaps()
 		}
 	}
 
-	_railtype_list.Clear();
+	_railtype_list.clear();
 }
 
 /** Container for a label for SaveLoad system */
@@ -108,7 +108,7 @@ static void Save_RAIL()
 
 static void Load_RAIL()
 {
-	_railtype_list.Clear();
+	_railtype_list.clear();
 
 	LabelObject lo;
 
diff --git a/src/saveload/waypoint_sl.cpp b/src/saveload/waypoint_sl.cpp
--- a/src/saveload/waypoint_sl.cpp
+++ b/src/saveload/waypoint_sl.cpp
@@ -172,7 +172,7 @@ static const SaveLoad _old_waypoint_desc
 static void Load_WAYP()
 {
 	/* Precaution for when loading failed and it didn't get cleared */
-	_old_waypoints.Clear();
+	_old_waypoints.clear();
 
 	int index;
 
@@ -201,7 +201,7 @@ static void Ptrs_WAYP()
 				 * whether we're in the NULL or "normal" Ptrs proc. So just clear the list
 				 * of old waypoints we constructed and then this waypoint (and the other
 				 * possibly corrupt ones) will not be queried in the NULL Ptrs proc run. */
-				_old_waypoints.Clear();
+				_old_waypoints.clear();
 				SlErrorCorrupt("Referencing invalid Town");
 			}
 			wp->town = Town::Get(wp->town_index);
diff --git a/src/settingsgen/settingsgen.cpp b/src/settingsgen/settingsgen.cpp
--- a/src/settingsgen/settingsgen.cpp
+++ b/src/settingsgen/settingsgen.cpp
@@ -103,7 +103,7 @@ public:
 	/** Clear the temporary storage. */
 	void Clear()
 	{
-		this->output_buffer.Clear();
+		this->output_buffer.clear();
 	}
 
 	/**
diff --git a/src/signs_gui.cpp b/src/signs_gui.cpp
--- a/src/signs_gui.cpp
+++ b/src/signs_gui.cpp
@@ -60,7 +60,7 @@ struct SignList {
 
 		DEBUG(misc, 3, "Building sign list");
 
-		this->signs.Clear();
+		this->signs.clear();
 
 		const Sign *si;
 		FOR_ALL_SIGNS(si) *this->signs.Append() = si;
diff --git a/src/station_gui.cpp b/src/station_gui.cpp
--- a/src/station_gui.cpp
+++ b/src/station_gui.cpp
@@ -178,7 +178,7 @@ protected:
 
 		DEBUG(misc, 3, "Building station list for company %d", owner);
 
-		this->stations.Clear();
+		this->stations.clear();
 
 		const Station *st;
 		FOR_ALL_STATIONS(st) {
@@ -2173,8 +2173,8 @@ static const T *FindStationsNearby(TileA
 {
 	TileArea ctx = ta;
 
-	_stations_nearby_list.Clear();
-	_deleted_stations_nearby.Clear();
+	_stations_nearby_list.clear();
+	_deleted_stations_nearby.clear();
 
 	/* Check the inside, to return, if we sit on another station */
 	TILE_AREA_LOOP(t, ta) {
diff --git a/src/story_gui.cpp b/src/story_gui.cpp
--- a/src/story_gui.cpp
+++ b/src/story_gui.cpp
@@ -52,7 +52,7 @@ protected:
 	void BuildStoryPageList()
 	{
 		if (this->story_pages.NeedRebuild()) {
-			this->story_pages.Clear();
+			this->story_pages.clear();
 
 			const StoryPage *p;
 			FOR_ALL_STORY_PAGES(p) {
@@ -78,7 +78,7 @@ protected:
 	void BuildStoryPageElementList()
 	{
 		if (this->story_page_elements.NeedRebuild()) {
-			this->story_page_elements.Clear();
+			this->story_page_elements.clear();
 
 			const StoryPage *p = GetSelPage();
 			if (p != NULL) {
diff --git a/src/strgen/strgen_base.cpp b/src/strgen/strgen_base.cpp
--- a/src/strgen/strgen_base.cpp
+++ b/src/strgen/strgen_base.cpp
@@ -1046,7 +1046,7 @@ void LanguageWriter::WriteLang(const Str
 
 			this->WriteLength(buffer.Length());
 			this->Write(buffer.Begin(), buffer.Length());
-			buffer.Clear();
+			buffer.clear();
 		}
 	}
 }
diff --git a/src/string.cpp b/src/string.cpp
--- a/src/string.cpp
+++ b/src/string.cpp
@@ -652,8 +652,8 @@ public:
 		 * for word break iterators (especially for CJK languages) in combination
 		 * with UTF-8 input. As a work around we have to convert the input to
 		 * UTF-16 and create a mapping back to UTF-8 character indices. */
-		this->utf16_str.Clear();
-		this->utf16_to_utf8.Clear();
+		this->utf16_str.clear();
+		this->utf16_to_utf8.clear();
 
 		while (*s != '\0') {
 			size_t idx = s - string_base;
diff --git a/src/textfile_gui.cpp b/src/textfile_gui.cpp
--- a/src/textfile_gui.cpp
+++ b/src/textfile_gui.cpp
@@ -319,7 +319,7 @@ static void Xunzip(byte **bufp, size_t *
 {
 	if (textfile == NULL) return;
 
-	this->lines.Clear();
+	this->lines.clear();
 
 	/* Get text from file */
 	size_t filesize;
diff --git a/src/town_cmd.cpp b/src/town_cmd.cpp
--- a/src/town_cmd.cpp
+++ b/src/town_cmd.cpp
@@ -3469,7 +3469,7 @@ void SetTownRatingTestMode(bool mode)
 	static int ref_count = 0; // Number of times test-mode is switched on.
 	if (mode) {
 		if (ref_count == 0) {
-			_town_test_ratings.Clear();
+			_town_test_ratings.clear();
 		}
 		ref_count++;
 	} else {
diff --git a/src/town_gui.cpp b/src/town_gui.cpp
--- a/src/town_gui.cpp
+++ b/src/town_gui.cpp
@@ -650,7 +650,7 @@ private:
 	void BuildSortTownList()
 	{
 		if (this->towns.NeedRebuild()) {
-			this->towns.Clear();
+			this->towns.clear();
 
 			const Town *t;
 			FOR_ALL_TOWNS(t) {
diff --git a/src/train_gui.cpp b/src/train_gui.cpp
--- a/src/train_gui.cpp
+++ b/src/train_gui.cpp
@@ -263,7 +263,7 @@ static void TrainDetailsCapacityTab(cons
  */
 static void GetCargoSummaryOfArticulatedVehicle(const Train *v, CargoSummary *summary)
 {
-	summary->Clear();
+	summary->clear();
 	do {
 		if (!v->GetEngine()->CanCarryCargo()) continue;
 
diff --git a/src/vehicle.cpp b/src/vehicle.cpp
--- a/src/vehicle.cpp
+++ b/src/vehicle.cpp
@@ -942,7 +942,7 @@ static void RunVehicleDayProc()
 
 void CallVehicleTicks()
 {
-	_vehicles_to_autoreplace.Clear();
+	_vehicles_to_autoreplace.clear();
 
 	RunVehicleDayProc();
 
diff --git a/src/vehicle_cmd.cpp b/src/vehicle_cmd.cpp
--- a/src/vehicle_cmd.cpp
+++ b/src/vehicle_cmd.cpp
@@ -347,7 +347,7 @@ static CommandCost RefitVehicle(Vehicle 
 	}
 
 	static SmallVector<RefitResult, 16> refit_result;
-	refit_result.Clear();
+	refit_result.clear();
 
 	v->InvalidateNewGRFCacheOfChain();
 	byte actual_subtype = new_subtype;
@@ -442,7 +442,7 @@ static CommandCost RefitVehicle(Vehicle 
 		}
 	}
 
-	refit_result.Clear();
+	refit_result.clear();
 	_returned_refit_capacity = total_capacity;
 	_returned_mail_refit_capacity = total_mail_capacity;
 	return cost;
diff --git a/src/vehicle_gui.cpp b/src/vehicle_gui.cpp
--- a/src/vehicle_gui.cpp
+++ b/src/vehicle_gui.cpp
@@ -234,7 +234,7 @@ byte GetBestFittingSubType(Vehicle *v_fr
 
 	/* Create a list of subtypes used by the various parts of v_for */
 	static SmallVector<StringID, 4> subtypes;
-	subtypes.Clear();
+	subtypes.clear();
 	for (; v_from != NULL; v_from = v_from->HasArticulatedPart() ? v_from->GetNextArticulatedPart() : NULL) {
 		const Engine *e_from = v_from->GetEngine();
 		if (!e_from->CanCarryCargo() || !HasBit(e_from->info.callback_mask, CBM_VEHICLE_CARGO_SUFFIX)) continue;
@@ -406,7 +406,7 @@ struct RefitWindow : public Window {
 	 */
 	void BuildRefitList()
 	{
-		for (uint i = 0; i < NUM_CARGO; i++) this->list[i].Clear();
+		for (uint i = 0; i < NUM_CARGO; i++) this->list[i].clear();
 		Vehicle *v = Vehicle::Get(this->window_number);
 
 		/* Check only the selected vehicles. */
diff --git a/src/vehiclelist.cpp b/src/vehiclelist.cpp
--- a/src/vehiclelist.cpp
+++ b/src/vehiclelist.cpp
@@ -70,8 +70,8 @@ bool VehicleListIdentifier::UnpackIfVali
  */
 void BuildDepotVehicleList(VehicleType type, TileIndex tile, VehicleList *engines, VehicleList *wagons, bool individual_wagons)
 {
-	engines->Clear();
-	if (wagons != NULL && wagons != engines) wagons->Clear();
+	engines->clear();
+	if (wagons != NULL && wagons != engines) wagons->clear();
 
 	const Vehicle *v;
 	FOR_ALL_VEHICLES(v) {
@@ -115,7 +115,7 @@ void BuildDepotVehicleList(VehicleType t
  */
 bool GenerateVehicleSortList(VehicleList *list, const VehicleListIdentifier &vli)
 {
-	list->Clear();
+	list->clear();
 
 	const Vehicle *v;
 
diff --git a/src/viewport.cpp b/src/viewport.cpp
--- a/src/viewport.cpp
+++ b/src/viewport.cpp
@@ -1620,11 +1620,11 @@ void ViewportDoDraw(const ViewPort *vp, 
 
 	_cur_dpi = old_dpi;
 
-	_vd.string_sprites_to_draw.Clear();
-	_vd.tile_sprites_to_draw.Clear();
-	_vd.parent_sprites_to_draw.Clear();
-	_vd.parent_sprites_to_sort.Clear();
-	_vd.child_screen_sprites_to_draw.Clear();
+	_vd.string_sprites_to_draw.clear();
+	_vd.tile_sprites_to_draw.clear();
+	_vd.parent_sprites_to_draw.clear();
+	_vd.parent_sprites_to_sort.clear();
+	_vd.child_screen_sprites_to_draw.clear();
 }
 
 /**
diff --git a/src/window.cpp b/src/window.cpp
--- a/src/window.cpp
+++ b/src/window.cpp
@@ -3024,7 +3024,7 @@ void HandleMouseEvents()
 		Blitter *blitter = BlitterFactory::GetCurrentBlitter();
 		_newgrf_debug_sprite_picker.clicked_pixel = blitter->MoveTo(_screen.dst_ptr, _cursor.pos.x, _cursor.pos.y);
 		_newgrf_debug_sprite_picker.click_time = _realtime_tick;
-		_newgrf_debug_sprite_picker.sprites.Clear();
+		_newgrf_debug_sprite_picker.sprites.clear();
 		_newgrf_debug_sprite_picker.mode = SPM_REDRAW;
 		MarkWholeScreenDirty();
 	} else {
@@ -3255,7 +3255,7 @@ void Window::ProcessScheduledInvalidatio
 	for (int *data = this->scheduled_invalidation_data.Begin(); this->window_class != WC_INVALID && data != this->scheduled_invalidation_data.End(); data++) {
 		this->OnInvalidateData(*data, true);
 	}
-	this->scheduled_invalidation_data.Clear();
+	this->scheduled_invalidation_data.clear();
 }
 
 /**