diff --git a/src/ol/format/EsriJSON.js b/src/ol/format/EsriJSON.js
index 2a15c14368..f36d1243aa 100644
--- a/src/ol/format/EsriJSON.js
+++ b/src/ol/format/EsriJSON.js
@@ -102,7 +102,10 @@ class EsriJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromObject(object, opt_options) {
     const esriJSONFeature = /** @type {EsriJSONFeature} */ (object);
@@ -123,7 +126,10 @@ class EsriJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {Array<Feature>} Features.
    */
   readFeaturesFromObject(object, opt_options) {
     const options = opt_options ? opt_options : {};
@@ -143,14 +149,19 @@ class EsriJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {EsriJSONGeometry} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {import("../geom/Geometry.js").default} Geometry.
    */
   readGeometryFromObject(object, opt_options) {
-    return readGeometry(/** @type {EsriJSONGeometry} */(object), opt_options);
+    return readGeometry(object, opt_options);
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @protected
+   * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjectionFromObject(object) {
     if (object['spatialReference'] && object['spatialReference']['wkid'] !== undefined) {
@@ -168,7 +179,6 @@ class EsriJSON extends JSONFeature {
    * @param {import("../geom/Geometry.js").default} geometry Geometry.
    * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
    * @return {EsriJSONGeometry} Object.
-   * @override
    * @api
    */
   writeGeometryObject(geometry, opt_options) {
@@ -181,7 +191,6 @@ class EsriJSON extends JSONFeature {
    * @param {import("../Feature.js").default} feature Feature.
    * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
    * @return {Object} Object.
-   * @override
    * @api
    */
   writeFeatureObject(feature, opt_options) {
@@ -212,7 +221,6 @@ class EsriJSON extends JSONFeature {
    * @param {Array<import("../Feature.js").default>} features Features.
    * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
    * @return {EsriJSONFeatureSet} EsriJSON Object.
-   * @override
    * @api
    */
   writeFeaturesObject(features, opt_options) {
diff --git a/src/ol/format/Feature.js b/src/ol/format/Feature.js
index afc8aab5a1..f6d4ec1a13 100644
--- a/src/ol/format/Feature.js
+++ b/src/ol/format/Feature.js
@@ -81,7 +81,7 @@ class FeatureFormat {
 
   /**
    * Adds the data projection to the read options.
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {ReadOptions=} opt_options Options.
    * @return {ReadOptions|undefined} Options.
    * @protected
@@ -132,7 +132,7 @@ class FeatureFormat {
    * Read a single feature from a source.
    *
    * @abstract
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {ReadOptions=} opt_options Read options.
    * @return {import("../Feature.js").FeatureLike} Feature.
    */
@@ -144,7 +144,7 @@ class FeatureFormat {
    * Read all features from a source.
    *
    * @abstract
-   * @param {Document|Node|ArrayBuffer|Object|string} source Source.
+   * @param {Document|Element|ArrayBuffer|Object|string} source Source.
    * @param {ReadOptions=} opt_options Read options.
    * @return {Array<import("../Feature.js").FeatureLike>} Features.
    */
@@ -156,7 +156,7 @@ class FeatureFormat {
    * Read a single geometry from a source.
    *
    * @abstract
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {ReadOptions=} opt_options Read options.
    * @return {import("../geom/Geometry.js").default} Geometry.
    */
@@ -168,7 +168,7 @@ class FeatureFormat {
    * Read the projection from a source.
    *
    * @abstract
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjection(source) {
diff --git a/src/ol/format/GML2.js b/src/ol/format/GML2.js
index 596ff706bd..0842d2ac07 100644
--- a/src/ol/format/GML2.js
+++ b/src/ol/format/GML2.js
@@ -53,7 +53,7 @@ class GML2 extends GMLBase {
         makeArrayPusher(this.readFeaturesInternal);
 
     /**
-     * @inheritDoc
+     * @type {string}
      */
     this.schemaLocation = options.schemaLocation ?
       options.schemaLocation : schemaLocation;
diff --git a/src/ol/format/GML3.js b/src/ol/format/GML3.js
index e6fd12d07d..b2929794f5 100644
--- a/src/ol/format/GML3.js
+++ b/src/ol/format/GML3.js
@@ -86,7 +86,7 @@ class GML3 extends GMLBase {
       options.multiSurface : true;
 
     /**
-     * @inheritDoc
+     * @type {string}
      */
     this.schemaLocation = options.schemaLocation ?
       options.schemaLocation : schemaLocation;
@@ -866,7 +866,6 @@ class GML3 extends GMLBase {
    * @param {import("../geom/Geometry.js").default} geometry Geometry.
    * @param {import("./Feature.js").WriteOptions=} opt_options Options.
    * @return {Node} Node.
-   * @override
    * @api
    */
   writeGeometryNode(geometry, opt_options) {
@@ -888,7 +887,6 @@ class GML3 extends GMLBase {
    * @param {Array<import("../Feature.js").default>} features Features.
    * @param {import("./Feature.js").WriteOptions=} opt_options Options.
    * @return {Element} Node.
-   * @override
    * @api
    */
   writeFeaturesNode(features, opt_options) {
diff --git a/src/ol/format/GML32.js b/src/ol/format/GML32.js
index 1cae5f8dd7..777829cecf 100644
--- a/src/ol/format/GML32.js
+++ b/src/ol/format/GML32.js
@@ -22,7 +22,7 @@ class GML32 extends GML3 {
     super(options);
 
     /**
-     * @inheritDoc
+     * @type {string}
      */
     this.schemaLocation = options.schemaLocation ?
       options.schemaLocation : this.namespace + ' http://schemas.opengis.net/gml/3.2.1/gml.xsd';
diff --git a/src/ol/format/GMLBase.js b/src/ol/format/GMLBase.js
index d0f5c7b05a..c3a726a484 100644
--- a/src/ol/format/GMLBase.js
+++ b/src/ol/format/GMLBase.js
@@ -470,7 +470,10 @@ class GMLBase extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @protected
+   * @return {import("../geom/Geometry.js").default|import("../extent.js").Extent} Geometry.
    */
   //@ts-ignore
   readGeometryFromNode(node, opt_options) {
@@ -480,7 +483,9 @@ class GMLBase extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {Array<import("../Feature.js").default>} Features.
    */
   readFeaturesFromNode(node, opt_options) {
     const options = {
@@ -495,7 +500,8 @@ class GMLBase extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjectionFromNode(node) {
     return getProjection(this.srsName ? this.srsName : node.firstElementChild.getAttribute('srsName'));
diff --git a/src/ol/format/GPX.js b/src/ol/format/GPX.js
index ec56119232..d1be09df7b 100644
--- a/src/ol/format/GPX.js
+++ b/src/ol/format/GPX.js
@@ -130,7 +130,7 @@ class GPX extends XMLFeature {
 
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection('EPSG:4326');
 
@@ -160,7 +160,9 @@ class GPX extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromNode(node, opt_options) {
     if (!includes(NAMESPACE_URIS, node.namespaceURI)) {
@@ -179,7 +181,9 @@ class GPX extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {Array<import("../Feature.js").default>} Features.
    */
   readFeaturesFromNode(node, opt_options) {
     if (!includes(NAMESPACE_URIS, node.namespaceURI)) {
@@ -207,7 +211,6 @@ class GPX extends XMLFeature {
    * @param {Array<Feature>} features Features.
    * @param {import("./Feature.js").WriteOptions=} opt_options Options.
    * @return {Node} Node.
-   * @override
    * @api
    */
   writeFeaturesNode(features, opt_options) {
diff --git a/src/ol/format/GeoJSON.js b/src/ol/format/GeoJSON.js
index 2e3f30dee2..0ea2a67ee9 100644
--- a/src/ol/format/GeoJSON.js
+++ b/src/ol/format/GeoJSON.js
@@ -63,7 +63,7 @@ class GeoJSON extends JSONFeature {
     super();
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection(
       options.dataProjection ?
@@ -90,7 +90,10 @@ class GeoJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromObject(object, opt_options) {
     /**
@@ -127,7 +130,10 @@ class GeoJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {Array<Feature>} Features.
    */
   readFeaturesFromObject(object, opt_options) {
     const geoJSONObject = /** @type {GeoJSONObject} */ (object);
@@ -147,14 +153,19 @@ class GeoJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {GeoJSONGeometry} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {import("../geom/Geometry.js").default} Geometry.
    */
   readGeometryFromObject(object, opt_options) {
-    return readGeometry(/** @type {GeoJSONGeometry} */ (object), opt_options);
+    return readGeometry(object, opt_options);
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @protected
+   * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjectionFromObject(object) {
     const crs = object['crs'];
@@ -181,7 +192,6 @@ class GeoJSON extends JSONFeature {
    * @param {import("../Feature.js").default} feature Feature.
    * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
    * @return {GeoJSONFeature} Object.
-   * @override
    * @api
    */
   writeFeatureObject(feature, opt_options) {
@@ -218,7 +228,6 @@ class GeoJSON extends JSONFeature {
    * @param {Array<import("../Feature.js").default>} features Features.
    * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
    * @return {GeoJSONFeatureCollection} GeoJSON Object.
-   * @override
    * @api
    */
   writeFeaturesObject(features, opt_options) {
@@ -239,7 +248,6 @@ class GeoJSON extends JSONFeature {
    * @param {import("../geom/Geometry.js").default} geometry Geometry.
    * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
    * @return {GeoJSONGeometry|GeoJSONGeometryCollection} Object.
-   * @override
    * @api
    */
   writeGeometryObject(geometry, opt_options) {
diff --git a/src/ol/format/IGC.js b/src/ol/format/IGC.js
index fb2d71f306..3c46e8af47 100644
--- a/src/ol/format/IGC.js
+++ b/src/ol/format/IGC.js
@@ -77,7 +77,7 @@ class IGC extends TextFeature {
     const options = opt_options ? opt_options : {};
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection('EPSG:4326');
 
@@ -89,7 +89,10 @@ class IGC extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromText(text, opt_options) {
     const altitudeMode = this.altitudeMode_;
@@ -164,7 +167,10 @@ class IGC extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {Array<Feature>} Features.
    */
   readFeaturesFromText(text, opt_options) {
     const feature = this.readFeatureFromText(text, opt_options);
diff --git a/src/ol/format/JSONFeature.js b/src/ol/format/JSONFeature.js
index 2186befc84..483c192752 100644
--- a/src/ol/format/JSONFeature.js
+++ b/src/ol/format/JSONFeature.js
@@ -19,7 +19,7 @@ class JSONFeature extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * @return {import("./FormatType.js").default} Format.
    */
   getType() {
     return FormatType.JSON;
@@ -29,7 +29,7 @@ class JSONFeature extends FeatureFormat {
    * Read a feature.  Only works for a single feature. Use `readFeatures` to
    * read a feature collection.
    *
-   * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+   * @param {ArrayBuffer|Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {import("../Feature.js").default} Feature.
    * @api
@@ -43,7 +43,7 @@ class JSONFeature extends FeatureFormat {
    * Read all features.  Works with both a single feature and a feature
    * collection.
    *
-   * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+   * @param {ArrayBuffer|Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {Array<import("../Feature.js").default>} Features.
    * @api
@@ -78,7 +78,7 @@ class JSONFeature extends FeatureFormat {
   /**
    * Read a geometry.
    *
-   * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+   * @param {ArrayBuffer|Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {import("../geom/Geometry.js").default} Geometry.
    * @api
@@ -102,7 +102,7 @@ class JSONFeature extends FeatureFormat {
   /**
    * Read the projection.
    *
-   * @param {ArrayBuffer|Document|Node|Object|string} source Source.
+   * @param {ArrayBuffer|Document|Element|Object|string} source Source.
    * @return {import("../proj/Projection.js").default} Projection.
    * @api
    */
@@ -189,7 +189,7 @@ class JSONFeature extends FeatureFormat {
 
 
 /**
- * @param {Document|Node|Object|string} source Source.
+ * @param {Document|Element|Object|string} source Source.
  * @return {Object} Object.
  */
 function getObject(source) {
diff --git a/src/ol/format/KML.js b/src/ol/format/KML.js
index 7cbe238247..1c1608d935 100644
--- a/src/ol/format/KML.js
+++ b/src/ol/format/KML.js
@@ -427,7 +427,7 @@ class KML extends XMLFeature {
     }
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection('EPSG:4326');
 
@@ -598,7 +598,9 @@ class KML extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromNode(node, opt_options) {
     if (!includes(NAMESPACE_URIS, node.namespaceURI)) {
@@ -614,7 +616,10 @@ class KML extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {Array<import("../Feature.js").default>} Features.
    */
   readFeaturesFromNode(node, opt_options) {
     if (!includes(NAMESPACE_URIS, node.namespaceURI)) {
@@ -847,7 +852,6 @@ class KML extends XMLFeature {
    * @param {Array<Feature>} features Features.
    * @param {import("./Feature.js").WriteOptions=} opt_options Options.
    * @return {Node} Node.
-   * @override
    * @api
    */
   writeFeaturesNode(features, opt_options) {
diff --git a/src/ol/format/MVT.js b/src/ol/format/MVT.js
index c8c8e2c77e..40c80480e7 100644
--- a/src/ol/format/MVT.js
+++ b/src/ol/format/MVT.js
@@ -234,7 +234,7 @@ class MVT extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * @return {import("./FormatType.js").default} Format.
    */
   getType() {
     return FormatType.ARRAY_BUFFER;
@@ -277,7 +277,10 @@ class MVT extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * Read the projection from the source.
+   *
+   * @param {Document|Element|Object|string} source Source.
+   * @return {import("../proj/Projection.js").default} Projection.
    * @api
    */
   readProjection(source) {
diff --git a/src/ol/format/OSMXML.js b/src/ol/format/OSMXML.js
index d74ddd2aa2..cef247f8a6 100644
--- a/src/ol/format/OSMXML.js
+++ b/src/ol/format/OSMXML.js
@@ -58,13 +58,16 @@ class OSMXML extends XMLFeature {
     super();
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection('EPSG:4326');
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {Array<import("../Feature.js").default>} Features.
    */
   readFeaturesFromNode(node, opt_options) {
     const options = this.getReadOptions(node, opt_options);
diff --git a/src/ol/format/OWS.js b/src/ol/format/OWS.js
index 1c4578afa9..e9dd976dd8 100644
--- a/src/ol/format/OWS.js
+++ b/src/ol/format/OWS.js
@@ -33,19 +33,21 @@ class OWS extends XML {
   }
 
   /**
-   * @inheritDoc
+   * @param {Document} doc Document.
+   * @return {Object} Object
    */
   readFromDocument(doc) {
     for (let n = doc.firstChild; n; n = n.nextSibling) {
       if (n.nodeType == Node.ELEMENT_NODE) {
-        return this.readFromNode(n);
+        return this.readFromNode(/** @type {Element} */ (n));
       }
     }
     return null;
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @return {Object} Object
    */
   readFromNode(node) {
     const owsObject = pushParseAndPop({},
diff --git a/src/ol/format/Polyline.js b/src/ol/format/Polyline.js
index d28f2c4e2f..8900422cd5 100644
--- a/src/ol/format/Polyline.js
+++ b/src/ol/format/Polyline.js
@@ -47,7 +47,7 @@ class Polyline extends TextFeature {
 
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection('EPSG:4326');
 
@@ -66,7 +66,10 @@ class Polyline extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromText(text, opt_options) {
     const geometry = this.readGeometryFromText(text, opt_options);
@@ -74,7 +77,10 @@ class Polyline extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {Array<Feature>} Features.
    */
   readFeaturesFromText(text, opt_options) {
     const feature = this.readFeatureFromText(text, opt_options);
@@ -82,7 +88,10 @@ class Polyline extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {import("../geom/Geometry.js").default} Geometry.
    */
   readGeometryFromText(text, opt_options) {
     const stride = getStrideForLayout(this.geometryLayout_);
@@ -95,7 +104,10 @@ class Polyline extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {import("../Feature.js").default} feature Features.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @protected
+   * @return {string} Text.
    */
   writeFeatureText(feature, opt_options) {
     const geometry = feature.getGeometry();
@@ -108,14 +120,20 @@ class Polyline extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Array<import("../Feature.js").default>} features Features.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @protected
+   * @return {string} Text.
    */
   writeFeaturesText(features, opt_options) {
     return this.writeFeatureText(features[0], opt_options);
   }
 
   /**
-   * @inheritDoc
+   * @param {LineString} geometry Geometry.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @protected
+   * @return {string} Text.
    */
   writeGeometryText(geometry, opt_options) {
     geometry = /** @type {LineString} */
diff --git a/src/ol/format/TextFeature.js b/src/ol/format/TextFeature.js
index 926ae832e4..c1f40290d7 100644
--- a/src/ol/format/TextFeature.js
+++ b/src/ol/format/TextFeature.js
@@ -19,7 +19,7 @@ class TextFeature extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * @return {import("./FormatType.js").default} Format.
    */
   getType() {
     return FormatType.TEXT;
@@ -28,7 +28,7 @@ class TextFeature extends FeatureFormat {
   /**
    * Read the feature from the source.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {import("../Feature.js").default} Feature.
    * @api
@@ -51,7 +51,7 @@ class TextFeature extends FeatureFormat {
   /**
    * Read the features from the source.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {Array<import("../Feature.js").default>} Features.
    * @api
@@ -74,7 +74,7 @@ class TextFeature extends FeatureFormat {
   /**
    * Read the geometry from the source.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {import("../geom/Geometry.js").default} Geometry.
    * @api
@@ -97,7 +97,7 @@ class TextFeature extends FeatureFormat {
   /**
    * Read the projection from the source.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @return {import("../proj/Projection.js").default} Projection.
    * @api
    */
@@ -186,7 +186,7 @@ class TextFeature extends FeatureFormat {
 
 
 /**
- * @param {Document|Node|Object|string} source Source.
+ * @param {Document|Element|Object|string} source Source.
  * @return {string} Text.
  */
 function getText(source) {
diff --git a/src/ol/format/TopoJSON.js b/src/ol/format/TopoJSON.js
index c8cc330cf7..37d3d7bcb9 100644
--- a/src/ol/format/TopoJSON.js
+++ b/src/ol/format/TopoJSON.js
@@ -78,7 +78,7 @@ class TopoJSON extends JSONFeature {
     this.layers_ = options.layers ? options.layers : null;
 
     /**
-     * @inheritDoc
+     * @type {import("../proj/Projection.js").default}
      */
     this.dataProjection = getProjection(
       options.dataProjection ?
@@ -87,7 +87,10 @@ class TopoJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {Array<Feature>} Features.
    */
   readFeaturesFromObject(object, opt_options) {
     if (object.type == 'Topology') {
@@ -128,7 +131,9 @@ class TopoJSON extends JSONFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Object} object Object.
+   * @protected
+   * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjectionFromObject(object) {
     return this.dataProjection;
diff --git a/src/ol/format/WFS.js b/src/ol/format/WFS.js
index e3cd863db2..435dc870e9 100644
--- a/src/ol/format/WFS.js
+++ b/src/ol/format/WFS.js
@@ -254,7 +254,10 @@ class WFS extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {Array<import("../Feature.js").default>} Features.
    */
   readFeaturesFromNode(node, opt_options) {
     /** @type {import("../xml.js").NodeStackItem} */
@@ -513,19 +516,21 @@ class WFS extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Document} doc Document.
+   * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjectionFromDocument(doc) {
-    for (let n = /** @type {Node} */ (doc.firstChild); n; n = n.nextSibling) {
+    for (let n = doc.firstChild; n; n = n.nextSibling) {
       if (n.nodeType == Node.ELEMENT_NODE) {
-        return this.readProjectionFromNode(n);
+        return this.readProjectionFromNode(/** @type {Element} */ (n));
       }
     }
     return null;
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @return {import("../proj/Projection.js").default} Projection.
    */
   readProjectionFromNode(node) {
     if (node.firstElementChild &&
diff --git a/src/ol/format/WKT.js b/src/ol/format/WKT.js
index c4c6ad2eb2..20660e484f 100644
--- a/src/ol/format/WKT.js
+++ b/src/ol/format/WKT.js
@@ -642,7 +642,10 @@ class WKT extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @return {import("../Feature.js").default} Feature.
    */
   readFeatureFromText(text, opt_options) {
     const geom = this.readGeometryFromText(text, opt_options);
@@ -655,7 +658,10 @@ class WKT extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {Array<Feature>} Features.
    */
   readFeaturesFromText(text, opt_options) {
     let geometries = [];
@@ -677,7 +683,10 @@ class WKT extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {string} text Text.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @protected
+   * @return {import("../geom/Geometry.js").default} Geometry.
    */
   readGeometryFromText(text, opt_options) {
     const geometry = this.parse_(text);
@@ -689,7 +698,10 @@ class WKT extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {import("../Feature.js").default} feature Features.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @protected
+   * @return {string} Text.
    */
   writeFeatureText(feature, opt_options) {
     const geometry = feature.getGeometry();
@@ -700,7 +712,10 @@ class WKT extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {Array<import("../Feature.js").default>} features Features.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @protected
+   * @return {string} Text.
    */
   writeFeaturesText(features, opt_options) {
     if (features.length == 1) {
@@ -715,7 +730,10 @@ class WKT extends TextFeature {
   }
 
   /**
-   * @inheritDoc
+   * @param {import("../geom/Geometry.js").default} geometry Geometry.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @protected
+   * @return {string} Text.
    */
   writeGeometryText(geometry, opt_options) {
     return encode(transformGeometryWithOptions(geometry, true, opt_options));
diff --git a/src/ol/format/WMSCapabilities.js b/src/ol/format/WMSCapabilities.js
index 7dda2be9de..82b5874383 100644
--- a/src/ol/format/WMSCapabilities.js
+++ b/src/ol/format/WMSCapabilities.js
@@ -60,19 +60,21 @@ class WMSCapabilities extends XML {
   }
 
   /**
-   * @inheritDoc
+   * @param {Document} doc Document.
+   * @return {Object} Object
    */
   readFromDocument(doc) {
     for (let n = doc.firstChild; n; n = n.nextSibling) {
       if (n.nodeType == Node.ELEMENT_NODE) {
-        return this.readFromNode(n);
+        return this.readFromNode(/** @type {Element} */ (n));
       }
     }
     return null;
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @return {Object} Object
    */
   readFromNode(node) {
     this.version = node.getAttribute('version').trim();
diff --git a/src/ol/format/WMSGetFeatureInfo.js b/src/ol/format/WMSGetFeatureInfo.js
index f63f88cb54..ccc8e2a136 100644
--- a/src/ol/format/WMSGetFeatureInfo.js
+++ b/src/ol/format/WMSGetFeatureInfo.js
@@ -144,7 +144,10 @@ class WMSGetFeatureInfo extends XMLFeature {
   }
 
   /**
-   * @inheritDoc
+   * @protected
+   * @param {Element} node Node.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Options.
+   * @return {Array<import("../Feature.js").default>} Features.
    */
   readFeaturesFromNode(node, opt_options) {
     const options = {};
diff --git a/src/ol/format/WMTSCapabilities.js b/src/ol/format/WMTSCapabilities.js
index bd1629f1d7..cfdcdd8cb4 100644
--- a/src/ol/format/WMTSCapabilities.js
+++ b/src/ol/format/WMTSCapabilities.js
@@ -59,19 +59,21 @@ class WMTSCapabilities extends XML {
   }
 
   /**
-   * @inheritDoc
+   * @param {Document} doc Document.
+   * @return {Object} Object
    */
   readFromDocument(doc) {
     for (let n = doc.firstChild; n; n = n.nextSibling) {
       if (n.nodeType == Node.ELEMENT_NODE) {
-        return this.readFromNode(n);
+        return this.readFromNode(/** @type {Element} */ (n));
       }
     }
     return null;
   }
 
   /**
-   * @inheritDoc
+   * @param {Element} node Node.
+   * @return {Object} Object
    */
   readFromNode(node) {
     let version = node.getAttribute('version');
diff --git a/src/ol/format/XMLFeature.js b/src/ol/format/XMLFeature.js
index 0f413e21c3..550b78dca7 100644
--- a/src/ol/format/XMLFeature.js
+++ b/src/ol/format/XMLFeature.js
@@ -27,7 +27,7 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * @return {import("./FormatType.js").default} Format.
    */
   getType() {
     return FormatType.XML;
@@ -36,7 +36,7 @@ class XMLFeature extends FeatureFormat {
   /**
    * Read a single feature.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
    * @return {import("../Feature.js").default} Feature.
    * @api
@@ -50,7 +50,7 @@ class XMLFeature extends FeatureFormat {
     } else if (isDocument(source)) {
       return this.readFeatureFromDocument(/** @type {Document} */ (source), opt_options);
     } else {
-      return this.readFeatureFromNode(/** @type {Node} */ (source), opt_options);
+      return this.readFeatureFromNode(/** @type {Element} */ (source), opt_options);
     }
   }
 
@@ -69,7 +69,7 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @param {Node} node Node.
+   * @param {Element} node Node.
    * @param {import("./Feature.js").ReadOptions=} opt_options Options.
    * @return {import("../Feature.js").default} Feature.
    */
@@ -80,7 +80,7 @@ class XMLFeature extends FeatureFormat {
   /**
    * Read all features from a feature collection.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @param {import("./Feature.js").ReadOptions=} opt_options Options.
    * @return {Array<import("../Feature.js").default>} Features.
    * @api
@@ -95,7 +95,7 @@ class XMLFeature extends FeatureFormat {
       return this.readFeaturesFromDocument(
         /** @type {Document} */ (source), opt_options);
     } else {
-      return this.readFeaturesFromNode(/** @type {Node} */ (source), opt_options);
+      return this.readFeaturesFromNode(/** @type {Element} */ (source), opt_options);
     }
   }
 
@@ -108,9 +108,9 @@ class XMLFeature extends FeatureFormat {
   readFeaturesFromDocument(doc, opt_options) {
     /** @type {Array<import("../Feature.js").default>} */
     const features = [];
-    for (let n = /** @type {Node} */ (doc.firstChild); n; n = n.nextSibling) {
+    for (let n = doc.firstChild; n; n = n.nextSibling) {
       if (n.nodeType == Node.ELEMENT_NODE) {
-        extend(features, this.readFeaturesFromNode(n, opt_options));
+        extend(features, this.readFeaturesFromNode(/** @type {Element} */ (n), opt_options));
       }
     }
     return features;
@@ -118,7 +118,7 @@ class XMLFeature extends FeatureFormat {
 
   /**
    * @abstract
-   * @param {Node} node Node.
+   * @param {Element} node Node.
    * @param {import("./Feature.js").ReadOptions=} opt_options Options.
    * @protected
    * @return {Array<import("../Feature.js").default>} Features.
@@ -128,7 +128,11 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * Read a single geometry from a source.
+   *
+   * @param {Document|Element|Object|string} source Source.
+   * @param {import("./Feature.js").ReadOptions=} opt_options Read options.
+   * @return {import("../geom/Geometry.js").default} Geometry.
    */
   readGeometry(source, opt_options) {
     if (!source) {
@@ -140,7 +144,7 @@ class XMLFeature extends FeatureFormat {
       return this.readGeometryFromDocument(
         /** @type {Document} */ (source), opt_options);
     } else {
-      return this.readGeometryFromNode(/** @type {Node} */ (source), opt_options);
+      return this.readGeometryFromNode(/** @type {Element} */ (source), opt_options);
     }
   }
 
@@ -155,7 +159,7 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @param {Node} node Node.
+   * @param {Element} node Node.
    * @param {import("./Feature.js").ReadOptions=} opt_options Options.
    * @protected
    * @return {import("../geom/Geometry.js").default} Geometry.
@@ -167,7 +171,7 @@ class XMLFeature extends FeatureFormat {
   /**
    * Read the projection from the source.
    *
-   * @param {Document|Node|Object|string} source Source.
+   * @param {Document|Element|Object|string} source Source.
    * @return {import("../proj/Projection.js").default} Projection.
    * @api
    */
@@ -180,7 +184,7 @@ class XMLFeature extends FeatureFormat {
     } else if (isDocument(source)) {
       return this.readProjectionFromDocument(/** @type {Document} */ (source));
     } else {
-      return this.readProjectionFromNode(/** @type {Node} */ (source));
+      return this.readProjectionFromNode(/** @type {Element} */ (source));
     }
   }
 
@@ -194,7 +198,7 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @param {Node} node Node.
+   * @param {Element} node Node.
    * @protected
    * @return {import("../proj/Projection.js").default} Projection.
    */
@@ -203,7 +207,11 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * Encode a feature as string.
+   *
+   * @param {import("../Feature.js").default} feature Feature.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @return {string} Encoded feature.
    */
   writeFeature(feature, opt_options) {
     const node = this.writeFeatureNode(feature, opt_options);
@@ -243,7 +251,11 @@ class XMLFeature extends FeatureFormat {
   }
 
   /**
-   * @inheritDoc
+   * Encode a geometry as string.
+   *
+   * @param {import("../geom/Geometry.js").default} geometry Geometry.
+   * @param {import("./Feature.js").WriteOptions=} opt_options Write options.
+   * @return {string} Encoded geometry.
    */
   writeGeometry(geometry, opt_options) {
     const node = this.writeGeometryNode(geometry, opt_options);