diff --git a/src/ol/control/Attribution.js b/src/ol/control/Attribution.js
index 27aed85ccd..b72d1a8dce 100644
--- a/src/ol/control/Attribution.js
+++ b/src/ol/control/Attribution.js
@@ -13,26 +13,23 @@ import {visibleAtResolution} from '../layer/Layer.js';
 
 /**
  * @typedef {Object} Options
- * @property {string|undefined} className CSS class name. Default is
- * `'ol-attribution'`.
- * @property {Element|string|undefined} target Specify a target if you
+ * @property {string} [className='ol-attribution'] CSS class name.
+ * @property {Element|string} [target] Specify a target if you
  * want the control to be rendered outside of the map's
  * viewport.
- * @property {boolean|undefined} collapsible Specify if attributions can
+ * @property {boolean} [collapsible=true] Specify if attributions can
  * be collapsed. If you use an OSM source, should be set to `false` — see
  * {@link https://www.openstreetmap.org/copyright OSM Copyright} —
- * Default is `true`.
- * @property {boolean|undefined} collapsed Specify if attributions should
- * be collapsed at startup. Default is `true`.
- * @property {string|undefined} tipLabel Text label to use for the button
- * tip. Default is `'Attributions'`
- * @property {string|Element|undefined} label Text label to use for the
- * collapsed attributions button. Default is `'i'`.
+ * @property {boolean} [collapsed=true] Specify if attributions should
+ * be collapsed at startup.
+ * @property {string} [tipLabel='Attributions'] Text label to use for the button tip.
+ * @property {string} [label='i'] Text label to use for the
+ * collapsed attributions button.
  * Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|Element|undefined} collapseLabel Text label to use
- * for the expanded attributions button. Default is `'»'`.
+ * @property {string|Element} [collapseLabel='»'] Text label to use
+ * for the expanded attributions button.
  * Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {function(ol.MapEvent)|undefined} render Function called when
+ * @property {function(ol.MapEvent)} [render] Function called when
  * the control should be re-rendered. This is called in a `requestAnimationFrame`
  * callback.
  */
diff --git a/src/ol/control/MousePosition.js b/src/ol/control/MousePosition.js
index 43a4c30cb1..22f2b884c3 100644
--- a/src/ol/control/MousePosition.js
+++ b/src/ol/control/MousePosition.js
@@ -23,18 +23,15 @@ const COORDINATE_FORMAT = 'coordinateFormat';
 
 /**
  * @typedef {Object} Options
- * @property {string|undefined} className CSS class name. Default is
- * `'ol-mouse-position'`.
- * @property {module:ol/coordinate~CoordinateFormat|undefined} coordinateFormat
- * Coordinate format.
+ * @property {string} [className='ol-mouse-position'] CSS class name.
+ * @property {module:ol/coordinate~CoordinateFormat} [coordinateFormat] Coordinate format.
  * @property {ol.ProjectionLike} projection Projection.
- * @property {function(ol.MapEvent)|undefined} render Function called when the
+ * @property {function(ol.MapEvent)} [render] Function called when the
  * control should be re-rendered. This is called in a `requestAnimationFrame`
  * callback.
- * @property {Element|string|undefined} target Specify a target if you want the
+ * @property {Element|string} [target] Specify a target if you want the
  * control to be rendered outside of the map's viewport.
- * @property {string|undefined} undefinedHTML Markup for undefined coordinates.
- * Default is `''` (empty string).
+ * @property {string} [undefinedHTML=''] Markup for undefined coordinates.
  */
 
 
diff --git a/src/ol/control/OverviewMap.js b/src/ol/control/OverviewMap.js
index 382a394a6b..f2914d8eb5 100644
--- a/src/ol/control/OverviewMap.js
+++ b/src/ol/control/OverviewMap.js
@@ -38,26 +38,22 @@ const MIN_RATIO = 0.1;
 
 /**
  * @typedef {Object} Options
- * @property {boolean|undefined} collapsed Whether the control should start collapsed
- * or not (expanded).  Default to `true`.
- * @property {string|Element|undefined} collapseLabel Text label to use for the
- * expanded overviewmap button. Default is `'«'`. Instead of text, also an element
- * (e.g. a `span` element) can be used.
- * @property {boolean|undefined} collapsible Whether the control can be collapsed
- * or not. Default to `true`.
- * @property {string|Element|undefined} label Text label to use for the collapsed
- * overviewmap button. Default is `'»'`. Instead of text, also an element
- * (e.g. a `span` element) can be used.
- * @property {Array.<ol.layer.Layer>|ol.Collection.<ol.layer.Layer>|undefined} layers
+ * @property {boolean} [collapsed=true] Whether the control should start collapsed
+ * or not (expanded).
+ * @property {string|Element} [collapseLabel='«'] Text label to use for the
+ * expanded overviewmap button. Instead of text, also an element (e.g. a `span` element) can be used.
+ * @property {boolean} [collapsible=true] Whether the control can be collapsed or not.
+ * @property {string|Element} [label='»'] Text label to use for the collapsed
+ * overviewmap button. Instead of text, also an element (e.g. a `span` element) can be used.
+ * @property {Array.<ol.layer.Layer>|ol.Collection.<ol.layer.Layer>} [layers]
  * Layers for the overview map. If not set, then all main map layers are used
  * instead.
- * @property {function(ol.MapEvent)|undefined} render Function called when the control
+ * @property {function(ol.MapEvent)} [render] Function called when the control
  * should be re-rendered. This is called in a `requestAnimationFrame` callback.
- * @property {Element|string|undefined} target Specify a target if you want the control
+ * @property {Element|string} [target] Specify a target if you want the control
  * to be rendered outside of the map's viewport.
- * @property {string|undefined} tipLabel Text label to use for the button tip. Default
- * is `'Overview map'`.
- * @property {ol.View|undefined} view Custom view for the overview map. If not provided,
+ * @property {string} [tipLabel='Overview map'] Text label to use for the button tip.
+ * @property {ol.View} [view] Custom view for the overview map. If not provided,
  * a default view with an EPSG:3857 projection will be used.
  */
 
diff --git a/src/ol/control/Rotate.js b/src/ol/control/Rotate.js
index 0ff894b973..6c3d7f1cd3 100644
--- a/src/ol/control/Rotate.js
+++ b/src/ol/control/Rotate.js
@@ -18,7 +18,7 @@ import {inherits} from '../index.js';
  * @property {string} [tipLabel='Reset rotation'] Text label to use for the rotate tip.
  * @property {number} [duration=250] Animation duration in milliseconds.
  * @property {boolean} [autoHide=true] Hide the control when rotation is 0.
- * @property {function(ol.MapEvent)|undefined} render Function called when the control should
+ * @property {function(ol.MapEvent)} [render] Function called when the control should
  * be re-rendered. This is called in a `requestAnimationFrame` callback.
  * @property {function()} [resetNorth] Function called when the control is clicked.
  * This will override the default `resetNorth`.
diff --git a/src/ol/control/ScaleLine.js b/src/ol/control/ScaleLine.js
index 3de1e823f5..d3b6b2fb42 100644
--- a/src/ol/control/ScaleLine.js
+++ b/src/ol/control/ScaleLine.js
@@ -27,13 +27,13 @@ const LEADING_DIGITS = [1, 2, 5];
 
 /**
  * @typedef {Object} Options
- * @property {string|undefined} className CSS Class name. Default is `'ol-scale-line'`.
- * @property {number|undefined} minWidth Minimum width in pixels. Default is `64`.
- * @property {function(ol.MapEvent)|undefined} render Function called when the control
+ * @property {string} [className='ol-scale-line'] CSS Class name.
+ * @property {number} [minWidth=64] Minimum width in pixels.
+ * @property {function(ol.MapEvent)} [render] Function called when the control
  * should be re-rendered. This is called in a `requestAnimationFrame` callback.
- * @property {Element|string|undefined} target Specify a target if you want the control
+ * @property {Element|string} [target] Specify a target if you want the control
  * to be rendered outside of the map's viewport.
- * @property {ol.control.ScaleLineUnits|string|undefined} units Units. Default is `'metric'`.
+ * @property {ol.control.ScaleLineUnits|string} [units='metric'] Units.
  */
 
 
diff --git a/src/ol/control/ZoomSlider.js b/src/ol/control/ZoomSlider.js
index 23a1cdbace..8717cc22d8 100644
--- a/src/ol/control/ZoomSlider.js
+++ b/src/ol/control/ZoomSlider.js
@@ -31,7 +31,7 @@ const Direction = {
  * @property {number} [duration=200] Animation duration in milliseconds.
  * @property {number|undefined} maxResolution Maximum resolution.
  * @property {number|undefined} minResolution Minimum resolution.
- * @property {function(ol.MapEvent)|undefined} render Function called when the control
+ * @property {function(ol.MapEvent)} [render] Function called when the control
  * should be re-rendered. This is called in a `requestAnimationFrame` callback.
  */
 
diff --git a/src/ol/control/ZoomToExtent.js b/src/ol/control/ZoomToExtent.js
index b32f05b50a..30563f7fa7 100644
--- a/src/ol/control/ZoomToExtent.js
+++ b/src/ol/control/ZoomToExtent.js
@@ -10,14 +10,13 @@ import {CLASS_CONTROL, CLASS_UNSELECTABLE} from '../css.js';
 
 /**
  * @typedef {Object} Options
- * @property {string|undefined} className Class name. Default is `'ol-zoom-extent'`.
- * @property {Element|string|undefined} target Specify a target if you want the control
+ * @property {string} [className='ol-zoom-extent'] Class name.
+ * @property {Element|string} [target] Specify a target if you want the control
  * to be rendered outside of the map's viewport.
- * @property {string|Element|undefined} label Text label to use for the button. Default
- * is `'E'`. Instead of text, also an element (e.g. a `span` element) can be used.
- * @property {string|undefined} tipLabel Text label to use for the button tip. Default
- * is `'Zoom to extent'`.
- * @property {ol.Extent|undefined} extent The extent to zoom to. If undefined the validity
+ * @property {string|Element} [label='E'] Text label to use for the button.
+ * Instead of text, also an element (e.g. a `span` element) can be used.
+ * @property {string} [tipLabel='Zoom to extent'] Text label to use for the button tip.
+ * @property {ol.Extent} [extent] The extent to zoom to. If undefined the validity
  * extent of the view projection is used.
  */