diff --git a/application/controllers/api/frontend/v1/Ort.php b/application/controllers/api/frontend/v1/Ort.php
index a208e4c0d..c921c0c4f 100644
--- a/application/controllers/api/frontend/v1/Ort.php
+++ b/application/controllers/api/frontend/v1/Ort.php
@@ -25,7 +25,19 @@ if (! defined('BASEPATH')) exit('No direct script access allowed');
  */
 class Ort extends FHCAPI_Controller
 {
-	
+	// advanced filters of getRooms: tbl_ort column => filter type, the same list as in Raumsuche.js.
+	// text: contains, case-insensitive; select: equals; range: <column>_min, <column>_max; flag: true; exists: not null
+	const ADVANCED_FILTERS = [
+		'ort_kurzbz' => 'text',
+		'bezeichnung' => 'text',
+		'planbezeichnung' => 'text',
+		'stockwerk' => 'range',
+		'gebteil' => 'select',
+		'm2' => 'range',
+		'lehre' => 'flag',
+		'content_id' => 'exists'
+	];
+
 	/**
 	 * Object initialization
 	 */
@@ -37,7 +49,9 @@ class Ort extends FHCAPI_Controller
 			'getOrtKurzbzContent' => self::PERM_LOGGED,
 			'getRooms' => self::PERM_LOGGED,
 			'getTypes' => self::PERM_LOGGED,
-			'getRoomInfo' => self::PERM_LOGGED
+			'getRoomInfo' => self::PERM_LOGGED,
+			'getStandorte' => self::PERM_LOGGED,
+			'getAdvancedFilterOptions' => self::PERM_LOGGED
 		]);
 
 		$this->load->model('ressource/Ort_model', 'OrtModel');
@@ -57,6 +71,17 @@ class Ort extends FHCAPI_Controller
 		$this->form_validation->set_rules('datum','Datum','required');
 		$this->form_validation->set_rules('von','Uhrzeit Von','required|regex_match[/^[0-9]{2}:[0-9]{2}$/]');
 		$this->form_validation->set_rules('bis','Uhrzeit Bis','required|regex_match[/^[0-9]{2}:[0-9]{2}$/]');
+		$this->form_validation->set_rules('standort_id','Standort','regex_match[/^([0-9]+|none)$/]');
+		foreach (self::ADVANCED_FILTERS as $column => $type) {
+			if ($type == 'range') {
+				$this->form_validation->set_rules($column.'_min', $column, 'numeric');
+				$this->form_validation->set_rules($column.'_max', $column, 'numeric');
+			} elseif ($type == 'flag' || $type == 'exists') {
+				$this->form_validation->set_rules($column, $column, 'in_list[true]');
+			} else {
+				$this->form_validation->set_rules($column, $column, 'max_length[255]');
+			}
+		}
 		if($this->form_validation->run() == FALSE) {
 			$this->terminateWithValidationErrors($this->form_validation->error_array());
 		}
@@ -66,6 +91,7 @@ class Ort extends FHCAPI_Controller
 		$bis = $this->input->get('bis', TRUE);
 		$typ = $this->input->get('typ', TRUE);
 		$personenanzahl = $this->input->get('personenanzahl', TRUE);
+		$standort_id = $this->input->get('standort_id', TRUE);
 		
 		
 		$this->load->model('ressource/Mitarbeiter_model', 'MitarbeiterModel');
@@ -78,21 +104,33 @@ class Ort extends FHCAPI_Controller
 		$this->load->model('ressource/Ort_model', 'OrtModel');
 
 		$params = array();
-		$qry = "SELECT DISTINCT tbl_ort.*
+		$qry = "SELECT DISTINCT tbl_ort.*, tbl_standort.bezeichnung AS standort
 			FROM public.tbl_ort JOIN public.tbl_ortraumtyp USING(ort_kurzbz)
-			WHERE aktiv AND lehre AND ort_kurzbz NOT LIKE '\\\\_%'";
+			LEFT JOIN public.tbl_standort USING(standort_id)
+			WHERE aktiv AND reservieren";
 		if($typ) {
 			$params[] = $typ;
-			$qry.= "AND raumtyp_kurzbz = ?";
+			$qry.= " AND raumtyp_kurzbz = ?";
 		}
 		
+		if($standort_id === 'none') { // rooms without a Standort
+			$qry.= " AND standort_id IS NULL";
+		} elseif($standort_id) {
+			$params[] = $standort_id;
+			$qry.= " AND standort_id = ?";
+		} else {
+			$qry.= " AND standort_id IS NOT NULL";
+		}
+
+		$qry.= $this->advancedFilterSql($params);
+
 		if(!$isMitarbeiter) { // students are only allowed to get a subset defined by config
 			$qry.= ' AND raumtyp_kurzbz IN ?';
 			$params[] = $this->config->item('roomtypes_student');
 			$this->addMeta('config', $this->config->item('roomtypes_student'));
 		}
 		
-		$qry.= "AND (max_person>= ? OR max_person is null)";
+		$qry.= " AND (max_person>= ? OR max_person is null)";
 		$params[] = $personenanzahl;
 
 		$qry.="	AND ort_kurzbz NOT IN 
@@ -130,6 +168,41 @@ class Ort extends FHCAPI_Controller
 		$this->terminateWithSuccess(getData($result));
 	}
 	
+	/**
+	 * Standorte of the rooms that pass the base filter of getRooms
+	 */
+	public function getStandorte()
+	{
+		$qry = "SELECT DISTINCT standort_id, tbl_standort.bezeichnung
+			FROM public.tbl_ort JOIN public.tbl_standort USING(standort_id)
+			WHERE aktiv AND reservieren
+			ORDER BY tbl_standort.bezeichnung";
+
+		$result = $this->OrtModel->execReadOnlyQuery($qry);
+
+		$this->terminateWithSuccess($this->getDataOrTerminateWithError($result));
+	}
+
+	/**
+	 * Values of the select filters: column => distinct values of the rooms that pass the base filter of getRooms
+	 */
+	public function getAdvancedFilterOptions()
+	{
+		$options = [];
+		foreach (self::ADVANCED_FILTERS as $column => $type) {
+			if ($type != 'select')
+				continue;
+
+			$result = $this->OrtModel->execReadOnlyQuery("SELECT DISTINCT ".$column." AS value
+				FROM public.tbl_ort
+				WHERE aktiv AND reservieren AND ".$column." <> ''
+				ORDER BY ".$column);
+			$options[$column] = array_column($this->getDataOrTerminateWithError($result), 'value');
+		}
+
+		$this->terminateWithSuccess($options);
+	}
+
 	/**
 	 * Gets a JSON body via HTTP POST and provides the parameters
 	 */
@@ -188,5 +261,49 @@ class Ort extends FHCAPI_Controller
 		
 		$this->terminateWithSuccess($room);
 	}
+
+	//------------------------------------------------------------------------------------------------------------------
+	// Private methods
+
+	/**
+	 * SQL conditions of the advanced filters in the GET parameters, adds their values to $params
+	 */
+	private function advancedFilterSql(&$params)
+	{
+		// no xss_clean: the values are bound, and it could change a select value so that it no longer equals the column
+		$sql = '';
+		foreach (self::ADVANCED_FILTERS as $column => $type) {
+			if ($type == 'range') {
+				$min = $this->input->get($column.'_min');
+				$max = $this->input->get($column.'_max');
+				if ($min !== null && $min !== '') {
+					$sql.= " AND tbl_ort.".$column." >= ?::numeric";
+					$params[] = $min;
+				}
+				if ($max !== null && $max !== '') {
+					$sql.= " AND tbl_ort.".$column." <= ?::numeric";
+					$params[] = $max;
+				}
+				continue;
+			}
+
+			$value = $this->input->get($column);
+			if ($value === null || $value === '')
+				continue;
+
+			if ($type == 'flag') {
+				$sql.= " AND tbl_ort.".$column;
+			} elseif ($type == 'exists') {
+				$sql.= " AND tbl_ort.".$column." IS NOT NULL";
+			} elseif ($type == 'select') {
+				$sql.= " AND tbl_ort.".$column." = ?";
+				$params[] = $value;
+			} else {
+				$sql.= " AND strpos(lower(tbl_ort.".$column."), lower(?)) > 0";
+				$params[] = $value;
+			}
+		}
+		return $sql;
+	}
 }
 
diff --git a/application/views/CisRouterView/CisRouterView.php b/application/views/CisRouterView/CisRouterView.php
index 1257ea563..529dc1f08 100644
--- a/application/views/CisRouterView/CisRouterView.php
+++ b/application/views/CisRouterView/CisRouterView.php
@@ -22,6 +22,7 @@ $includesArray = array(
 		'public/css/components/FilterComponent.css',
 		'public/css/components/Profil.css',
 		'public/css/components/FormUnderline.css',
+		'public/css/components/inViewTooltip.css',
 		'public/css/components/abgabetool/abgabe.css',
 		'public/css/Cis4/Cms.css',
 		'public/css/Cis4/Studium.css',
diff --git a/public/css/components/inViewTooltip.css b/public/css/components/inViewTooltip.css
new file mode 100644
index 000000000..600d59302
--- /dev/null
+++ b/public/css/components/inViewTooltip.css
@@ -0,0 +1,81 @@
+/* the panel of js/directives/inViewTooltip.js. place() sets its place, max width and max height
+   inside the viewport, so neither a scrolling container nor a modal body clips it */
+.fhc-in-view-tooltip {
+	--fhc-in-view-tooltip-progress: var(--fhc-blue-primary, #0d6efd);
+	position: fixed;
+	z-index: 1080;
+	display: flex;
+	flex-direction: column;
+	width: max-content;
+	border: 1px solid var(--bs-border-color, #dee2e6);
+	border-radius: 0.375rem;
+	background-color: var(--bs-body-bg, #fff);
+	box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
+	color: var(--bs-body-color, #212529);
+	font-size: 0.875rem;
+	font-weight: normal;
+	line-height: 1.5;
+	text-align: left;
+}
+
+/* the dark primary reaches 2:1 on the dark panel, the highlight 3.9:1 */
+html.dark .fhc-in-view-tooltip {
+	--fhc-in-view-tooltip-progress: var(--fhc-blue-primary-highlight, #6ea8fe);
+}
+
+/* the body scrolls, so the progress border stays on the panel edge */
+.fhc-in-view-tooltip-body {
+	min-height: 0;
+	overflow-y: auto;
+	padding: 0.75rem 1rem;
+	white-space: pre-line; /* the text keeps its line breaks */
+}
+
+/* the hover timer of a sticky panel: after a pause the border fills up clockwise, then the panel sticks.
+   The 2 px stroke covers the 1 px border and 1 px inside it */
+.fhc-in-view-tooltip-progress {
+	position: absolute;
+	inset: 0;
+	width: 100%;
+	height: 100%;
+	overflow: visible;
+	pointer-events: none;
+}
+
+.fhc-in-view-tooltip-progress rect {
+	fill: none;
+	stroke: var(--fhc-in-view-tooltip-progress);
+	stroke-width: 2;
+	stroke-dasharray: var(--fhc-in-view-tooltip-perimeter);
+	stroke-dashoffset: var(--fhc-in-view-tooltip-perimeter);
+}
+
+.fhc-in-view-tooltip--holding .fhc-in-view-tooltip-progress rect {
+	animation: fhc-in-view-tooltip-hold var(--fhc-in-view-tooltip-hold-fill) ease-in var(--fhc-in-view-tooltip-hold-delay) forwards;
+}
+
+/* a click during the hover timer fills the rest of the border quickly */
+.fhc-in-view-tooltip--pinned .fhc-in-view-tooltip-progress rect {
+	stroke-dashoffset: 0;
+	transition: stroke-dashoffset 0.15s linear;
+}
+
+@keyframes fhc-in-view-tooltip-hold {
+	to {
+		stroke-dashoffset: 0;
+	}
+}
+
+/* the ? icon of components/InViewHelp.js takes the color of its context, e.g. white in the blue
+   modal header. A class like text-muted overrides it */
+.fhc-in-view-help-btn,
+.fhc-in-view-help-btn:hover,
+.fhc-in-view-help-btn:focus-visible,
+.btn.fhc-in-view-help-btn:active {
+	color: inherit;
+}
+
+.fhc-in-view-help-btn {
+	line-height: 1;
+	text-decoration: none;
+}
diff --git a/public/js/api/factory/ort.js b/public/js/api/factory/ort.js
index dce61279d..ac948a3f3 100644
--- a/public/js/api/factory/ort.js
+++ b/public/js/api/factory/ort.js
@@ -23,11 +23,11 @@ export default {
 			params: { ort_kurzbz: ort_kurbz },
 		};
 	},
-	getRooms(datum, von, bis, typ, personenanzahl = 0) {
+	getRooms(datum, von, bis, typ, personenanzahl = 0, standort_id = null, advancedFilters = {}) {
 		return {
-			method: "get",
-			url: "/api/frontend/v1/Ort/getRooms",
-			params: { datum, von, bis, typ, personenanzahl },
+			method: 'get',
+			url: '/api/frontend/v1/Ort/getRooms',
+			params: { datum, von, bis, typ, personenanzahl, standort_id, ...advancedFilters }
 		};
 	},
 	getRoomTypes() {
@@ -46,4 +46,18 @@ export default {
 			},
 		};
 	},
+	getStandorte() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/Ort/getStandorte',
+			params: { }
+		};
+	},
+	getAdvancedFilterOptions() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/Ort/getAdvancedFilterOptions',
+			params: { }
+		};
+	}
 };
diff --git a/public/js/components/Cis/Raumsuche/Raumsuche.js b/public/js/components/Cis/Raumsuche/Raumsuche.js
index ecc6b9003..7c5509a7f 100644
--- a/public/js/components/Cis/Raumsuche/Raumsuche.js
+++ b/public/js/components/Cis/Raumsuche/Raumsuche.js
@@ -2,12 +2,39 @@ import {CoreFilterCmpt} from "../../../components/filter/Filter.js";
 import FormInput from "../../Form/Input.js";
 import VueDatePicker from '../../vueDatepicker.js.php';
 import ApiOrt from '../../../api/factory/ort.js'
+import InViewHelp from '../../InViewHelp.js';
+
+// advanced filters: tbl_ort column, filter type and label, the same list as Ort::ADVANCED_FILTERS
+const ADVANCED_FILTERS = [
+	{ column: 'lehre', type: 'flag', label: 'rauminfo/nurLehrraeume', checked: true },
+	{ column: 'content_id', type: 'exists', label: 'rauminfo/nurMitInfoseite' },
+	{ column: 'ort_kurzbz', type: 'text', label: 'rauminfo/raum_kurzbz' },
+	{ column: 'bezeichnung', type: 'text', label: 'global/bezeichnung' },
+	{ column: 'planbezeichnung', type: 'text', label: 'rauminfo/raumnummer' },
+	{ column: 'stockwerk', type: 'range', label: 'rauminfo/stockwerk' },
+	{ column: 'gebteil', type: 'select', label: 'rauminfo/gebaeudeteil' },
+	{ column: 'm2', type: 'range', label: 'rauminfo/flaeche' }
+];
+
+// the GET parameters of the advanced filters with their default values
+const ADVANCED_DEFAULTS = {};
+for (const { column, type, checked } of ADVANCED_FILTERS) {
+	if (type === 'range') {
+		ADVANCED_DEFAULTS[column + '_min'] = '';
+		ADVANCED_DEFAULTS[column + '_max'] = '';
+	} else {
+		ADVANCED_DEFAULTS[column] = type === 'flag' || type === 'exists' ? !!checked : '';
+	}
+}
+
 export const Raumsuche =  {
 	name: "Raumsuche",
 	components: {
 		VueDatePicker,
 		CoreFilterCmpt,
 		FormInput,
+		InViewHelp,
+		InputNumber: primevue.inputnumber,
 	},
 	inject: ["isMobile"],
 	data() {
@@ -18,13 +45,17 @@ export const Raumsuche =  {
 			tableBuiltResolve: null,
 			tableBuiltPromise: null,
 			roomtypes: null,
-			defaultType: {
-				raumtyp_kurzbz: '',
-				beschreibung: Vue.computed(() => this.$p.t('global/alle'))
-			},
 			anzahl: 1,
 			anzahlInput: '1',
 			selectedType: null,
+			standorte: null,
+			standort_id: null,
+			roomsRequest: 0,
+			loading: false,
+			advancedFilterFields: ADVANCED_FILTERS,
+			advancedFilters: { ...ADVANCED_DEFAULTS },
+			advancedFilterOptions: {},
+			showAdvancedFilters: false,
 			datum: new Date(),
 			von: Vue.ref({
 				hours: new Date().getHours(),
@@ -57,7 +88,12 @@ export const Raumsuche =  {
 					{title: Vue.computed(() => this.$p.t('rauminfo/raum_kurzbz')), field: 'ort_kurzbz', widthGrow: 1},
 					{title: Vue.computed(() => this.$p.t('global/bezeichnung')), field: 'bezeichnung', widthGrow: 2},
 					{title: Vue.computed(() => this.$p.t('rauminfo/raumnummer')), field: 'nummer', widthGrow: 1},
+					{title: Vue.computed(() => this.$p.t('rauminfo/standort')), field: 'standort', widthGrow: 1},
+					{title: Vue.computed(() => this.$p.t('rauminfo/gebaeudeteil')), field: 'gebteil', widthGrow: 1, visible: false},
+					{title: Vue.computed(() => this.$p.t('rauminfo/stockwerk')), field: 'stockwerk', sorter: 'number', widthGrow: 1, visible: false},
 					{title: Vue.computed(() => this.$p.t('rauminfo/personcap')), field: 'personen', widthGrow: 1},
+					{title: Vue.computed(() => this.$p.t('rauminfo/flaeche')), field: 'm2', sorter: 'number', widthGrow: 1, visible: false},
+					{title: Vue.computed(() => this.$p.t('rauminfo/lehrraum')), field: 'lehre', formatter: 'tickCross', hozAlign: 'center', widthGrow: 1, visible: false},
 					{title: Vue.computed(() => this.$p.t('rauminfo/rauminfo')),
 						field: 'linkInfo', formatter: this.linkFormatter, widthGrow: 1},
 					{title: Vue.computed(() => this.$p.t('rauminfo/roomReservations')), 
@@ -76,8 +112,21 @@ export const Raumsuche =  {
 	computed: {
 		isDarkMode(){
 			return this.$theme.theme_name.value == 'dark';
+		},
+		// shown on the toggle, the panel can be closed while its filters are active
+		activeAdvancedFilters() {
+			return Object.keys(ADVANCED_DEFAULTS).filter(key => this.advancedFilters[key] !== ADVANCED_DEFAULTS[key]).length
 		}
 	},
+	watch: {
+		datum: 'loadRooms',
+		von: 'loadRooms',
+		bis: 'loadRooms',
+		selectedType: 'loadRooms',
+		standort_id: 'loadRooms',
+		anzahl: 'loadRooms',
+		advancedFilters: { handler: 'loadRooms', deep: true }
+	},
 	methods: {
 		tableResolve(resolve) {
 			this.tableBuiltResolve = resolve
@@ -117,7 +166,12 @@ export const Raumsuche =  {
 					ort_kurzbz: room.ort_kurzbz,
 					bezeichnung: room.bezeichnung.replace('&amp;', '&'),
 					nummer: room.planbezeichnung,
+					standort: room.standort,
+					gebteil: room.gebteil,
+					stockwerk: room.stockwerk,
 					personen: room.max_person,
+					m2: room.m2,
+					lehre: room.lehre,
 					linkInfo: room.content_id ? this.roomInfoLink(room) : null,
 					linkRes: this.roomPlanLink(room)
 					
@@ -133,15 +187,34 @@ export const Raumsuche =  {
 				res?.data?.forEach(type => {
 					type.beschreibung = type.beschreibung?.replace('&amp;', '&')
 				})
-				this.selectedType = this.defaultType
 				this.roomtypes = res?.data ?? []
 			})
 		},
-		loadRooms() {
-			this.$api.call(ApiOrt.getRooms(this.datum.toISOString(), this.getTimeString(this.von), this.getTimeString(this.bis), this.selectedType?.raumtyp_kurzbz ?? '', this.anzahl))
+		loadStandorte() {
+			this.$api.call(ApiOrt.getStandorte())
 				.then(res => {
-					if(res?.data?.retval) this.setupData(res.data.retval)
-			})
+					this.standorte = res?.data ?? []
+				})
+		},
+		loadAdvancedFilterOptions() {
+			this.$api.call(ApiOrt.getAdvancedFilterOptions())
+				.then(res => {
+					this.advancedFilterOptions = res?.data ?? {}
+				})
+		},
+		loadRooms() {
+			// only the latest request may fill the table, older answers can arrive later
+			const request = ++this.roomsRequest
+			this.loading = true
+			// empty and unchecked filters stay out of the request
+			const advancedFilters = Object.fromEntries(Object.entries(this.advancedFilters).filter(([, value]) => value !== '' && value !== false))
+			this.$api.call(ApiOrt.getRooms(this.datum.toISOString(), this.getTimeString(this.von), this.getTimeString(this.bis), this.selectedType?.raumtyp_kurzbz ?? '', this.anzahl, this.standort_id, advancedFilters))
+				.then(res => {
+					if(request === this.roomsRequest && res?.data?.retval) this.setupData(res.data.retval)
+				})
+				.finally(() => {
+					if(request === this.roomsRequest) this.loading = false
+				})
 		},
 		handleUuidDefined(uuid) {
 			this.tabulatorUuid = uuid
@@ -160,6 +233,9 @@ export const Raumsuche =  {
 			this.normalizeAnzahl()
 			this.loadRooms()
 		},
+		resetAdvancedFilters() {
+			this.advancedFilters = { ...ADVANCED_DEFAULTS }
+		},
 		setRoute(val) {
 			// TODO: router push
 		},
@@ -180,6 +256,8 @@ export const Raumsuche =  {
 			await this.tableBuiltPromise
 			
 			this.loadRoomTypes()
+			this.loadStandorte()
+			this.loadAdvancedFilterOptions()
 			this.loadRooms()
 
 			const tableID = this.tabulatorUuid ? ('-' + this.tabulatorUuid) : ''
@@ -195,14 +273,17 @@ export const Raumsuche =  {
 		}
 	},
 	created() {
-		this.phrasenPromise = this.$p.loadCategory(['rauminfo', 'global'])
+		this.phrasenPromise = this.$p.loadCategory(['rauminfo', 'global', 'ui', 'filter'])
 		this.phrasenPromise.then(()=> {this.phrasenResolved = true})
 	},
 	mounted() {
 		this.setupMounted()
 	},
 	template: `
-	<h1 class="h3">{{$p.t('rauminfo/roomSearch')}}</h1>
+	<div class="d-flex align-items-center gap-2 mb-2">
+		<h1 class="h3 mb-0">{{$p.t('rauminfo/roomSearch')}}</h1>
+		<in-view-help button-class="fs-5 text-body-secondary" :text="$p.t('rauminfo/tooltipRaumsuchev2')"></in-view-help>
+	</div>
 	<hr>
 	<div class="row">
 		<div :class="{'pb-1': isMobile}" class="col-12 col-lg-2">
@@ -248,16 +329,24 @@ export const Raumsuche =  {
 			</VueDatePicker>
 		</div>
 		
-		<div :class="{'pb-1': isMobile}" class="col-12 col-lg-3">
+		<div :class="{'pb-1': isMobile}" class="col-12 col-lg-2">
 			<select ref="raumtyp" id="raumtypSelect" v-model="selectedType" class="form-select" 
-			:aria-label="$p.t('global/studiensemester_auswaehlen')" @change="setRoute($event.target.value)">
-				<option :key="defaultType" selected :value="defaultType">{{defaultType.beschreibung}}</option>
+			:aria-label="$p.t('rauminfo/raumtyp')" @change="setRoute($event.target.value)">
+				<option :value="null">{{ $p.t('global/alle') }}</option>
 				<option v-for="typ in roomtypes" :key="typ" :value="typ">{{typ.beschreibung}}</option>
 			</select>
 		</div>
+
+		<div :class="{'pb-1': isMobile}" class="col-12 col-lg-2">
+			<select id="standortSelect" v-model="standort_id" class="form-select" :aria-label="$p.t('rauminfo/standort')">
+				<option :value="null">{{ $p.t('rauminfo/alleStandorte') }}</option>
+				<option value="none">{{ $p.t('rauminfo/ohneStandort') }}</option>
+				<option v-for="standort in standorte" :key="standort.standort_id" :value="standort.standort_id">{{ standort.bezeichnung }}</option>
+			</select>
+		</div>
 		
 
-		<div :class="{'pb-2': isMobile}" class="col-12 col-lg-3">
+		<div :class="{'pb-2': isMobile}" class="col-12 col-lg">
 			<div class="input-group">
 				<span class="input-group-text">{{ $p.t('rauminfo/minCapacity') }}:</span>
 				<FormInput
@@ -275,22 +364,68 @@ export const Raumsuche =  {
 				/>
 			</div>
 		</div>
-		<div class="col-12 col-lg-2">
-			<button class="btn btn-primary border-0" @click="search">{{ $p.t('rauminfo/roomSearch') }} <i class="fa fa-magnifying-glass"></i></button>
-		</div>
 	</div>
 	
 
-     <core-filter-cmpt 
-     	v-if="phrasenResolved"
-		@uuidDefined="handleUuidDefined"
-		:title="''"  
-		ref="raumsucheTable" 
-		:tabulator-options="raumsucheTableOptions"  
-		:tabulator-events="raumsucheTableEventHandlers"
-		tableOnly 
-		:sideMenu="false"
-	 />
+	<div class="d-flex justify-content-end my-1">
+		<button type="button" class="btn btn-link btn-sm p-0 text-decoration-none text-body-secondary"
+			:aria-expanded="showAdvancedFilters" aria-controls="raumsucheAdvancedFilters"
+			@click="showAdvancedFilters = !showAdvancedFilters">
+			<i class="fa-solid fa-sliders me-1"></i>{{ $p.t('rauminfo/erweiterteFilter') }}
+			<span v-if="activeAdvancedFilters" class="badge rounded-pill bg-primary ms-1">{{ activeAdvancedFilters }}</span>
+			<i class="fa-solid ms-1" :class="showAdvancedFilters ? 'fa-chevron-up' : 'fa-chevron-down'"></i>
+		</button>
+	</div>
+	<div v-show="showAdvancedFilters" id="raumsucheAdvancedFilters" class="row g-2 mb-3">
+		<div v-for="filter in advancedFilterFields" :key="filter.column" class="col-12 col-md-6 col-lg-3"
+			:class="{'align-self-end': filter.type === 'flag' || filter.type === 'exists'}">
+			<div v-if="filter.type === 'flag' || filter.type === 'exists'" class="form-check">
+				<input :id="'raumsucheFilter-' + filter.column" v-model="advancedFilters[filter.column]" type="checkbox" class="form-check-input">
+				<label :for="'raumsucheFilter-' + filter.column" class="form-check-label">{{ $p.t(filter.label) }}</label>
+			</div>
+			<template v-else>
+				<label :for="'raumsucheFilter-' + filter.column" class="form-label small mb-1">{{ $p.t(filter.label) }}</label>
+				<input v-if="filter.type === 'text'" :id="'raumsucheFilter-' + filter.column"
+					v-model.lazy.trim="advancedFilters[filter.column]" type="text" class="form-control form-control-sm">
+				<select v-else-if="filter.type === 'select'" :id="'raumsucheFilter-' + filter.column"
+					v-model="advancedFilters[filter.column]" class="form-select form-select-sm">
+					<option value="">{{ $p.t('ui/alle') }}</option>
+					<option v-for="option in advancedFilterOptions[filter.column]" :key="option" :value="option">{{ option }}</option>
+				</select>
+				<div v-else class="input-group input-group-sm">
+					<input :id="'raumsucheFilter-' + filter.column" v-model.lazy="advancedFilters[filter.column + '_min']"
+						type="number" step="any" class="form-control"
+						:placeholder="$p.t('ui/von')" :aria-label="$p.t(filter.label) + ' ' + $p.t('ui/von')">
+					<input v-model.lazy="advancedFilters[filter.column + '_max']"
+						type="number" step="any" class="form-control"
+						:placeholder="$p.t('global/bis')" :aria-label="$p.t(filter.label) + ' ' + $p.t('global/bis')">
+				</div>
+			</template>
+		</div>
+		<div class="col-12 text-end">
+			<button type="button" class="btn btn-link btn-sm p-0" :disabled="!activeAdvancedFilters" @click="resetAdvancedFilters">
+				{{ $p.t('filter/filterDelete') }}
+			</button>
+		</div>
+	</div>
+
+	<div class="position-relative">
+		<div :class="{'opacity-50': loading}">
+			<core-filter-cmpt
+				v-if="phrasenResolved"
+				@uuidDefined="handleUuidDefined"
+				:title="''"
+				ref="raumsucheTable"
+				:tabulator-options="raumsucheTableOptions"
+				:tabulator-events="raumsucheTableEventHandlers"
+				tableOnly
+				:sideMenu="false"
+			/>
+		</div>
+		<div v-if="loading" class="position-absolute top-0 start-0 w-100 h-100 d-flex justify-content-center align-items-center">
+			<i class="fa-solid fa-spinner fa-pulse fa-3x"></i>
+		</div>
+	</div>
     `,
 };
 
diff --git a/public/js/components/InViewHelp.js b/public/js/components/InViewHelp.js
new file mode 100644
index 000000000..2f2586828
--- /dev/null
+++ b/public/js/components/InViewHelp.js
@@ -0,0 +1,34 @@
+import InViewTooltip from '../directives/inViewTooltip.js';
+
+/**
+ * ? icon with a help text in the in-view tooltip. The panel stays inside the viewport, also at the
+ * screen edge, in a modal and on a phone: a plain tooltip ran out of the screen there.
+ *
+ * Help texts are long, so the panel is sticky by default: it sticks after a hover of 1.4 s or a click,
+ * a tap toggles it on touch. sticky: false makes it a plain hover tooltip.
+ *
+ * The view needs public/css/components/inViewTooltip.css.
+ *
+ * Usage: <in-view-help :text="$p.t('category/phrase')" button-class="fs-5 text-body-secondary"></in-view-help>
+ */
+export default {
+	name: 'InViewHelp',
+	directives: {
+		tooltip: InViewTooltip
+	},
+	props: {
+		text: { type: String, default: '' },
+		sticky: { type: Boolean, default: true },
+		buttonClass: { type: [String, Array, Object], default: '' }
+	},
+	template: /*html*/ `
+	<button
+		type="button"
+		class="btn btn-link p-0 fhc-in-view-help-btn"
+		:class="buttonClass"
+		:aria-label="$p.t('ui/hilfe')"
+		v-tooltip="{ value: text, sticky }"
+	>
+		<i class="fa fa-circle-question" aria-hidden="true"></i>
+	</button>`
+};
diff --git a/public/js/directives/inViewTooltip.js b/public/js/directives/inViewTooltip.js
new file mode 100644
index 000000000..023d15755
--- /dev/null
+++ b/public/js/directives/inViewTooltip.js
@@ -0,0 +1,352 @@
+/**
+ * v-tooltip with a panel that stays in view, also at the screen edge, in a modal and on a phone.
+ *
+ * - The panel is fixed and stays inside the viewport. It opens below the anchor, above it when
+ *   it fits only there or that side has more space. It grows away from the nearer viewport side.
+ * - On an anchor wider than the panel, e.g. a long table cell, it opens at the mouse, not at the anchor edge.
+ * - One panel at a time, appended to the body. A modal or a scrolling container cannot clip it.
+ * - A mouse hover or a keyboard focus opens it. Escape, a click outside or a scroll closes it.
+ *
+ * Sticky, for several sentences or a list: a short label is read before the hover pause ends, a long text is not.
+ * - After HOLD_DELAY_MS + HOLD_FILL_MS of hovering the panel sticks, the border fills up in the end.
+ *   A click on the anchor makes it stick at once. Touch has no hover: a tap toggles the sticky panel.
+ * - A sticky panel stays until a click outside, Escape, a scroll or an opening bootstrap modal.
+ *
+ * The view needs public/css/components/inViewTooltip.css.
+ *
+ * Usage examples:
+ *
+ * 1) Directive, registered for the app or the component:
+ *    app.directive('tooltip', InViewTooltip)  or  directives: { tooltip: InViewTooltip }
+ *    <button v-tooltip="label">           a short label, hover only
+ *    <span v-tooltip.sticky="longText">   several sentences or a list
+ *    v-tooltip="{ value: text, disabled: bool, sticky: bool }", the modifier .top prefers the place above
+ *
+ * 2) Without a directive, e.g. a tabulator cell. The content is a text, a DOM node or a function:
+ *    { event: 'cellMouseEnter', handler: (e, cell) => hoverTooltip(cell.getElement(), () => buildNode(cell), { delay: 300, sticky: true, closeOnClick: true }) },
+ *    { event: 'cellMouseLeave', handler: (e, cell) => hideTooltip(cell.getElement()) }
+ *
+ * 3) A ? icon with a help text: components/InViewHelp.js
+ */
+
+// hover time until a sticky panel sticks: a pause without motion filters out a pointer that only passes by,
+// then a short fill shows the pin. A long fill would draw the eye away from the text
+const HOLD_DELAY_MS = 1000
+const HOLD_FILL_MS = 400
+const HIDE_DELAY_MS = 150 // the pointer can cross the gap from the anchor into the panel
+const WATCH_MS = 250 // an anchor can leave the page without an unmount, e.g. in a hidden keep-alive tab
+const PANEL_MAX_WIDTH = 512 // px
+const PANEL_MARGIN = 16 // px between the panel and the viewport edge
+const PANEL_GAP = 6 // px between the anchor and the panel
+const PANEL_RADIUS = 5 // px, the inner radius of the panel border. The progress border follows it
+const PANEL_POINTER_INSET = 16 // px, the horizontal padding of the panel: the text starts below the mouse
+
+const clamp = (value, min, max) => Math.min(Math.max(value, min), max)
+
+let active = null // the open panel, only one at a time
+let pending = null // a delayed show
+let panelCount = 0
+
+// the last pointer. Its type tells a tap from a mouse also for the mouse events of tabulator, a tap fires
+// emulated mouse events too: pointerover fires before them. Its place puts the panel next to the mouse
+const pointer = { type: 'mouse', x: null, y: null }
+const trackPointer = event => {
+	pointer.type = event.pointerType
+	pointer.x = event.clientX
+	pointer.y = event.clientY
+}
+for (const name of ['pointerover', 'pointermove', 'pointerdown'])
+	document.addEventListener(name, trackPointer, { capture: true, passive: true })
+
+/**
+ * Opens the panel for an anchor element.
+ *
+ * content: a text, a DOM node or a function that returns one of them.
+ * options: prefer ('bottom' | 'top'), delay (ms), sticky (the hover timer pins the panel), pinned (sticks at once),
+ *          closeOnClick (a click on the anchor closes the panel, e.g. a table cell with a click action)
+ */
+export function showTooltip(anchor, content, options = {}) {
+	cancelPending()
+	if (!options.delay) return open(anchor, content, options)
+
+	pending = { anchor, timer: setTimeout(() => { pending = null; open(anchor, content, options) }, options.delay) }
+}
+
+// for mouse events without a pointer type, e.g. the cell events of tabulator
+export function hoverTooltip(anchor, content, options) {
+	if (pointer.type === 'mouse') showTooltip(anchor, content, options)
+}
+
+// closes the panel of the anchor after HIDE_DELAY_MS, a sticky panel stays
+export function hideTooltip(anchor) {
+	if (pending?.anchor === anchor) cancelPending()
+	if (active?.anchor !== anchor || active.pinned) return
+
+	clearTimeout(active.hideTimer)
+	active.hideTimer = setTimeout(close, HIDE_DELAY_MS)
+}
+
+// closes the open panel, with an anchor only the panel of that anchor
+export function closeTooltip(anchor) {
+	if (!anchor || pending?.anchor === anchor) cancelPending()
+	if (!anchor || active?.anchor === anchor) close()
+}
+
+function isTooltipPinned(anchor) {
+	return active?.anchor === anchor && active.pinned
+}
+
+// new content for an open panel, an empty text closes it
+function updateTooltip(anchor, content) {
+	if (active?.anchor !== anchor) return
+	if (!content) return close()
+
+	render(active.panel, content)
+	place()
+}
+
+function open(anchor, content, { prefer = 'bottom', sticky = false, pinned = false, closeOnClick = false }) {
+	if (active?.anchor === anchor) {
+		clearTimeout(active.hideTimer)
+		if (pinned) pin()
+		return
+	}
+	close()
+
+	sticky = sticky || pinned
+	const panel = document.createElement('div')
+	panel.id = 'fhc-in-view-tooltip-' + ++panelCount
+	panel.className = 'fhc-in-view-tooltip'
+	panel.setAttribute('role', 'tooltip')
+	panel.innerHTML = '<div class="fhc-in-view-tooltip-body"></div>'
+	if (sticky) {
+		panel.style.setProperty('--fhc-in-view-tooltip-hold-delay', HOLD_DELAY_MS + 'ms')
+		panel.style.setProperty('--fhc-in-view-tooltip-hold-fill', HOLD_FILL_MS + 'ms')
+		panel.insertAdjacentHTML('beforeend', '<svg class="fhc-in-view-tooltip-progress" aria-hidden="true">'
+			+ '<rect width="100%" height="100%" rx="' + PANEL_RADIUS + '"></rect></svg>')
+	}
+	render(panel, content)
+	document.body.appendChild(panel)
+
+	// the pointer at the opening, while it is over the anchor. A keyboard focus has none
+	const rect = anchor.getBoundingClientRect()
+	const overAnchor = pointer.x !== null && pointer.x >= rect.left && pointer.x <= rect.right
+		&& pointer.y >= rect.top && pointer.y <= rect.bottom
+
+	active = {
+		anchor,
+		panel,
+		prefer,
+		pointerX: overAnchor ? pointer.x : null,
+		sticky,
+		closeOnClick,
+		pinned: false,
+		describedBy: anchor.getAttribute('aria-describedby'),
+		holdTimer: null,
+		hideTimer: null,
+		watchTimer: setInterval(() => {
+			if (!anchor.isConnected || !anchor.getClientRects().length) close()
+		}, WATCH_MS)
+	}
+	place()
+	anchor.setAttribute('aria-describedby', panel.id)
+
+	if (pinned) {
+		pin()
+	} else if (sticky) {
+		panel.classList.add('fhc-in-view-tooltip--holding')
+		active.holdTimer = setTimeout(pin, HOLD_DELAY_MS + HOLD_FILL_MS)
+	}
+
+	panel.addEventListener('pointerenter', onPanelEnter)
+	panel.addEventListener('pointerleave', onPanelLeave)
+	panel.addEventListener('click', onPanelClick)
+	document.addEventListener('pointerdown', onPointerDown, true)
+	document.addEventListener('keydown', onKeyDown, true)
+	// an anchor often opens a modal on click, the sticky panel must not cover it
+	document.addEventListener('show.bs.modal', close)
+	window.addEventListener('scroll', onScroll, true)
+	window.addEventListener('resize', place)
+}
+
+function pin() {
+	if (!active || active.pinned || !active.sticky) return
+
+	clearTimeout(active.holdTimer)
+	clearTimeout(active.hideTimer)
+	active.pinned = true
+	active.panel.classList.remove('fhc-in-view-tooltip--holding')
+	active.panel.classList.add('fhc-in-view-tooltip--pinned')
+}
+
+function close() {
+	if (!active) return
+
+	const { anchor, panel, describedBy } = active
+	clearTimeout(active.holdTimer)
+	clearTimeout(active.hideTimer)
+	clearInterval(active.watchTimer)
+	active = null
+
+	panel.remove()
+	if (describedBy) anchor.setAttribute('aria-describedby', describedBy)
+	else anchor.removeAttribute('aria-describedby')
+
+	document.removeEventListener('pointerdown', onPointerDown, true)
+	document.removeEventListener('keydown', onKeyDown, true)
+	document.removeEventListener('show.bs.modal', close)
+	window.removeEventListener('scroll', onScroll, true)
+	window.removeEventListener('resize', place)
+}
+
+function cancelPending() {
+	if (!pending) return
+
+	clearTimeout(pending.timer)
+	pending = null
+}
+
+function render(panel, content) {
+	if (typeof content === 'function') content = content()
+
+	const body = panel.querySelector('.fhc-in-view-tooltip-body')
+	if (content instanceof Node) body.replaceChildren(content)
+	else body.textContent = content
+}
+
+function place() {
+	if (!active) return
+
+	const { anchor, panel, prefer } = active
+	const rect = anchor.getBoundingClientRect()
+	const viewWidth = document.documentElement.clientWidth
+	const viewHeight = document.documentElement.clientHeight
+
+	// measure the natural size first
+	panel.style.maxWidth = Math.min(PANEL_MAX_WIDTH, viewWidth - 2 * PANEL_MARGIN) + 'px'
+	panel.style.maxHeight = ''
+	panel.style.left = '0px'
+	panel.style.top = '0px'
+	panel.style.bottom = ''
+	const width = panel.offsetWidth
+	const height = panel.offsetHeight
+
+	const space = {
+		bottom: viewHeight - rect.bottom - PANEL_GAP - PANEL_MARGIN,
+		top: rect.top - PANEL_GAP - PANEL_MARGIN
+	}
+	const other = prefer === 'top' ? 'bottom' : 'top'
+	let side = prefer
+	if (space[prefer] < height) side = space[other] >= height || space[other] > space[prefer] ? other : prefer
+
+	// a panel at least as wide as the anchor starts at the anchor edge, grows away from the nearer viewport side
+	// and spans the whole anchor. On a wider anchor that edge can be far from the mouse: the text starts below
+	// the pointer, the clamp moves the panel to the left only at the right viewport edge
+	const { pointerX } = active
+	let left
+	if (pointerX === null || width >= rect.width) left = rect.left + rect.width / 2 < viewWidth / 2 ? rect.left : rect.right - width
+	else left = pointerX - PANEL_POINTER_INSET
+	panel.style.left = clamp(left, PANEL_MARGIN, viewWidth - PANEL_MARGIN - width) + 'px'
+	panel.style.maxHeight = space[side] + 'px'
+	if (side === 'bottom') {
+		panel.style.top = rect.bottom + PANEL_GAP + 'px'
+	} else {
+		panel.style.top = ''
+		panel.style.bottom = viewHeight - rect.top + PANEL_GAP + 'px'
+	}
+
+	if (!active.sticky) return
+
+	// the dash of the progress border is as long as the rounded rect along the inner edge of the 1 px border.
+	// Rounded up, else a gap stays at its start: clientWidth drops the fraction of the width
+	const box = panel.getBoundingClientRect()
+	const perimeter = 2 * (box.width + box.height - 4) - (8 - 2 * Math.PI) * PANEL_RADIUS
+	panel.style.setProperty('--fhc-in-view-tooltip-perimeter', Math.ceil(perimeter) + 1)
+}
+
+function onPanelEnter() {
+	cancelPending()
+	clearTimeout(active.hideTimer)
+}
+
+function onPanelLeave(event) {
+	if (event.pointerType === 'mouse') hideTooltip(active.anchor)
+}
+
+// a click into the panel closes it, a text selection keeps it
+function onPanelClick() {
+	if (!String(window.getSelection())) close()
+}
+
+function onPointerDown(event) {
+	const { anchor, panel, closeOnClick } = active
+	if (panel.contains(event.target)) return
+	if (anchor.contains(event.target) && !closeOnClick) return
+
+	cancelPending()
+	close()
+}
+
+// Escape closes only the panel, not a modal around the anchor
+function onKeyDown(event) {
+	if (event.key !== 'Escape') return
+
+	event.stopPropagation()
+	close()
+}
+
+// the panel is fixed, a scroll moves the anchor away from it. A scroll inside the panel keeps it
+function onScroll(event) {
+	if (!active.panel.contains(event.target)) close()
+}
+
+// reads the binding: "text" or { value, disabled, sticky }, the modifiers .sticky and .top
+function read(state, binding) {
+	const value = binding.value
+	const isObject = value && typeof value === 'object'
+	state.text = (isObject ? (value.disabled ? '' : value.value) : value) ?? ''
+	state.sticky = !!(binding.modifiers.sticky || isObject && value.sticky)
+	state.prefer = binding.modifiers.top ? 'top' : 'bottom'
+}
+
+export default {
+	mounted(el, binding) {
+		const state = el._fhcInViewTooltip = { pointerType: 'mouse' }
+		read(state, binding)
+		const show = options => {
+			if (state.text) showTooltip(el, state.text, { prefer: state.prefer, sticky: state.sticky, ...options })
+		}
+
+		state.listeners = {
+			pointerenter: event => { if (event.pointerType === 'mouse') show() },
+			pointerleave: event => { if (event.pointerType === 'mouse') hideTooltip(el) },
+			pointerdown: event => { state.pointerType = event.pointerType },
+			// a mouse click or a key pins a sticky panel at once, a tap toggles it
+			click: () => {
+				if (!state.sticky) return
+
+				if (state.pointerType !== 'mouse' && isTooltipPinned(el)) closeTooltip(el)
+				else show({ pinned: true })
+
+				state.pointerType = 'mouse' // a key click has no pointerdown
+			},
+			focusin: event => { if (event.target.matches(':focus-visible')) show() },
+			focusout: () => hideTooltip(el)
+		}
+		// the click captures: it pins the panel before the click action of the anchor runs, so a modal
+		// that this action opens closes the panel again. The pointer events must not capture the children
+		for (const [name, listener] of Object.entries(state.listeners)) el.addEventListener(name, listener, name === 'click')
+	},
+	updated(el, binding) {
+		const state = el._fhcInViewTooltip
+		const text = state.text
+		read(state, binding)
+		if (state.text !== text) updateTooltip(el, state.text)
+	},
+	beforeUnmount(el) {
+		const state = el._fhcInViewTooltip
+		closeTooltip(el)
+		for (const [name, listener] of Object.entries(state.listeners)) el.removeEventListener(name, listener, name === 'click')
+		delete el._fhcInViewTooltip
+	}
+}
diff --git a/system/phrasesupdate.php b/system/phrasesupdate.php
index 501b5d38e..c52d50623 100644
--- a/system/phrasesupdate.php
+++ b/system/phrasesupdate.php
@@ -21669,6 +21669,264 @@ array(
 			)
 		)
 	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'standort',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Standort",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Site",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'alleStandorte',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Alle Standorte",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "All Sites",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'ohneStandort',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Ohne Standort",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "No Site",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'tooltipRaumsuchev2',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Die Raumsuche zeigt freie Räume für einen Zeitraum. Ein Raum ist frei, wenn im Stundenplan keine Lehrveranstaltung steht und niemand den Raum reserviert hat. Beim Öffnen zeigt die Liste die Räume, die ab jetzt für eine Stunde frei sind.
+
+So finden Sie einen freien Raum:
+1. Wählen Sie Datum und Uhrzeit.
+2. Optional: Wählen Sie einen Raumtyp, einen Standort und eine Mindestpersonenkapazität.
+Die Liste lädt neu, sobald Sie einen Filter ändern.
+
+In der Liste:
+• Raum Informationen: Das Symbol öffnet die Infoseite des Raums. Ein Strich bedeutet: Der Raum hat keine Infoseite.
+• Raum Reservierungen: Das Symbol öffnet den Kalender des Raums. Der Kalender zeigt alle Lehrveranstaltungen und Reservierungen.",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "The room search shows free rooms for a time period. A room is free when the timetable shows no course in the room and nobody reserved the room. When you open the page, the list shows the rooms that are free from now for one hour.
+
+How to find a free room:
+1. Select the date and the time.
+2. Optional: select a room type, a site and a minimum person capacity.
+The list loads again when you change a filter.
+
+In the list:
+• Room Information: the icon opens the information page of the room. A dash means that the room has no information page.
+• Room Reservations: the icon opens the calendar of the room. The calendar shows all courses and reservations.",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'erweiterteFilter',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Erweiterte Filter",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Advanced filters",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'nurLehrraeume',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Nur Lehrräume",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Only teaching rooms",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'nurMitInfoseite',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Nur Räume mit Infoseite",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Only rooms with an information page",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'lehrraum',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Lehrraum",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Teaching room",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'stockwerk',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Stockwerk",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Floor",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'gebaeudeteil',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Gebäudeteil",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Building section",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'flaeche',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Fläche in m²",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Area in m²",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'rauminfo',
+		'phrase' => 'raumtyp',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => "Raumtyp",
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => "Room Type",
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
 	array(
 		'app' => 'core',
 		'category' => 'lehre',