diff --git a/core/modules/ckeditor/js/ckeditor.js b/core/modules/ckeditor/js/ckeditor.js
index 7ad9cd5..f58f2b8 100644
--- a/core/modules/ckeditor/js/ckeditor.js
+++ b/core/modules/ckeditor/js/ckeditor.js
@@ -21,7 +21,8 @@
      *   The text format for the editor.
      *
      * @return {bool}
-     *   The result of the editor attach function.
+     *   True if the `CKEDITOR.replace()` call created an editor, false
+     *   otherwise.
      */
     attach: function (element, format) {
       this._loadExternalPlugins(format);
@@ -56,7 +57,7 @@
      *   The event trigger for the detach.
      *
      * @return {bool}
-     *   The result of the detach function.
+     *   True if an editor was found, false otherwise.
      */
     detach: function (element, format, trigger) {
       var editor = CKEDITOR.dom.element.get(element).getEditor();
@@ -81,7 +82,7 @@
      *   Callback called with the value of the editor.
      *
      * @return {bool}
-     *   The result of the onChange function.
+     *   True if an editor was found, false otherwise.
      */
     onChange: function (element, callback) {
       var editor = CKEDITOR.dom.element.get(element).getEditor();
@@ -106,7 +107,8 @@
      *   The id attribute for the floated editor toolbar, if any.
      *
      * @return {bool}
-     *   The result of the attachInlineEditor function.
+     *   True if the `CKEDITOR.inline()` call created an editor, false
+     *   otherwise.
      */
     attachInlineEditor: function (element, format, mainToolbarId, floatedToolbarId) {
       this._loadExternalPlugins(format);