diff --git a/src/wp-admin/js/customize-controls.js b/src/wp-admin/js/customize-controls.js
index 5987bf4..0322bfb 100644
--- a/src/wp-admin/js/customize-controls.js
+++ b/src/wp-admin/js/customize-controls.js
@@ -3381,9 +3381,44 @@
 	// Change objects contained within the main customize object to Settings.
 	api.defaultConstructor = api.Setting;
 
-	// Create the collections for Controls, Sections and Panels.
+	/**
+	 * Get instance of control by ID
+	 * Use wp.customize.control.each( function(){ ... } ) to loop through each control registered in customizer
+	 *
+	 * @param {string} ID of control
+	 * @param {function} Called if control with ID is found, control instance passed as first parameter
+	 * @returns {wp.customize.Control|undefined} Control instance or undefined
+	 *
+	 * @example wp.customize.control('background_color') Getting `background_color` control instance
+	 * @example wp.customize.control('background_color').setting.get() Getting `background_color` value
+	 * @example wp.customize.control('background_color', function( control ){ control.setting.set('#f00') } ) Setting `background_color` to red
+	 */
 	api.control = new api.Values({ defaultConstructor: api.Control });
+
+	/**
+	 * Get instance of section by ID
+	 * Use wp.customize.section.each( function(){ ... } ) to loop through each section registered in customizer
+	 *
+	 * @param {string} ID of section
+	 * @param {function} Called if section with ID is found, section instance passed as first parameter
+	 * @returns {wp.customize.Section|undefined} Section instance or undefined
+	 *
+	 * @example wp.customize.section('title_tagline') Getting `title_tagline` section instance
+	 * @example wp.customize.section('title_tagline', function( section ){ section.expand() } ) Expand (enter) `title_tagline` section
+	 */
 	api.section = new api.Values({ defaultConstructor: api.Section });
+
+	/**
+	 * Get instance of panel by ID
+	 * Use wp.customize.panel.each( function(){ ... } ) to loop through each panel registered in customizer
+	 *
+	 * @param {string} ID of panel
+	 * @param {function} Called if panel with ID is found, panel instance passed as first parameter
+	 * @returns {wp.customize.Panel|undefined} Panel instance or undefined
+	 *
+	 * @example wp.customize.panel('nav_menus') Getting nav_menus panel instance
+	 * @example wp.customize.panel('nav_menus', function( panel ){ panel.expand() } ) Expand (enter) nav_menus panel
+	 */
 	api.panel = new api.Values({ defaultConstructor: api.Panel });
 
 	/**