diff --git a/lib/ace/ext/show_settings_menu.js b/lib/ace/ext/show_settings_menu.js
index a65630ad..5e14c62c 100644
--- a/lib/ace/ext/show_settings_menu.js
+++ b/lib/ace/ext/show_settings_menu.js
@@ -205,8 +205,9 @@ define(function(require, exports, module) {
          * @param {string} clss Maps to the class of the dom element. This is
          *  the name of the object containing the set function e.g. `editor`,
          *  `session`, `renderer`.
-         * @param {string} item Maps to the id of the dom element. This is the
-         *  set function name.
+         * @param {string} item  This is the set function name. It maps to the
+         *  id of the dom element (check, select, input) and to the "contains"
+         *  attribute of the div holding both the element and its label.
          * @param {mixed} val This is the value of the setting. It is mapped to
          *  the dom element's value, checked, or selected option accordingly.
          */