diff --git a/platform/commonUI/about/src/AboutController.js b/platform/commonUI/about/src/AboutController.js
index 6eb2171d34..77c6ede2cb 100644
--- a/platform/commonUI/about/src/AboutController.js
+++ b/platform/commonUI/about/src/AboutController.js
@@ -5,12 +5,33 @@ define(
     function () {
         "use strict";
 
+        /**
+         * The AboutController provides information to populate the
+         * About dialog.
+         * @constructor
+         * @param {object[]} versions an array of version extensions;
+         *        injected from `versions[]`
+         * @param $window Angular-injected window object
+         */
         function AboutController(versions, $window) {
             return {
+                /**
+                 * Get version info. This is given as an array of
+                 * objects, where each object is intended to appear
+                 * as a line-item in the version information listing.
+                 * @memberof AboutController#
+                 * @returns {object[]} version information
+                 */
                 versions: function () {
                     return versions;
                 },
+                /**
+                 * Open a new window (or tab, depending on browser
+                 * configuration) containing open source licenses.
+                 * @memberof AboutController#
+                 */
                 openLicenses: function () {
+                    // Open a new browser window at the licenses route
                     $window.open("#/licenses");
                 }
             };
diff --git a/platform/commonUI/about/src/LogoController.js b/platform/commonUI/about/src/LogoController.js
index 93f425d1d7..1ff6b7602f 100644
--- a/platform/commonUI/about/src/LogoController.js
+++ b/platform/commonUI/about/src/LogoController.js
@@ -5,8 +5,18 @@ define(
     function () {
         "use strict";
 
+        /**
+         * The LogoController provides functionality to the application
+         * logo in the bottom-right of the user interface.
+         * @constructor
+         * @param {OverlayService} overlayService the overlay service
+         */
         function LogoController(overlayService) {
             return {
+                /**
+                 * Display the About dialog.
+                 * @memberof LogoController#
+                 */
                 showAboutDialog: function () {
                     overlayService.createOverlay("overlay-about");
                 }