next docs update

Author: linev

modules/gui.mjs

@@ -104,9 +104,12 @@ function readStyleFromURL(url) {
 /** @summary Build main GUI
   * @desc Used in many HTML files to create JSROOT GUI elements
   * @param {String} gui_element - id of the `<div>` element
-  * @param {String} [gui_kind] - either "online", "nobrowser", "draw"
-  * @returns {Promise} when completed  */
-function buildGUI(gui_element, gui_kind) {
+  * @param {String} gui_kind - either "online", "nobrowser", "draw"
+  * @returns {Promise} with {@link HierarchyPainter} instance
+  * @example
+  * import { buildGUI } from '/path_to_jsroot/modules/gui.mjs';
+  * buildGUI("guiDiv"); */
+function buildGUI(gui_element, gui_kind = "") {
    let myDiv = (typeof gui_element == 'string') ? d3_select('#' + gui_element) : d3_select(gui_element);
    if (myDiv.empty())
       return Promise.reject(Error('no div for gui found'));

modules/tree.mjs

@@ -2519,7 +2519,7 @@ function treeProcess(tree, selector, args) {
 
 }
 
-/** @summary  implementation of TTree::Draw
+/** @summary implementation of TTree::Draw
   * @param {object|string} args - different setting or simply draw expression
   * @param {string} args.expr - draw expression
   * @param {string} [args.cut=undefined]   - cut expression (also can be part of 'expr' after '::')

modules/webwindow.mjs

@@ -635,7 +635,7 @@ class WebWindowHandle {
   * @param {object} arg.receiver - instance of receiver for websocket events, allows to initiate connection immediately
   * @param {string} [arg.first_recv] - required prefix in the first message from RWebWindow, remain part of message will be returned in handle.first_msg
   * @param {string} [arg.href] - URL to RWebWindow, using window.location.href by default
-  * @returns {Promise} ready-to-use WebWindowHandle instance  */
+  * @returns {Promise} ready-to-use {@link WebWindowHandle} instance  */
 function connectWebWindow(arg) {
 
    if (typeof arg == 'function')