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diff --git a/js/mathjax/extensions/TeX/autobold.js b/js/mathjax/extensions/TeX/autobold.js
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+++ b/js/mathjax/extensions/TeX/autobold.js
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+// @license magnet:?xt=urn:btih:8e4f440f4c65981c5bf93c76d35135ba5064d8b7dn=apache-2.0.txt Apache-2.0
+/* -*- Mode: Javascript; indent-tabs-mode:nil; js-indent-level: 2 -*- */
+/* vim: set ts=2 et sw=2 tw=80: */
+
+/*************************************************************
+ *
+ *  MathJax/extensions/TeX/autobold.js
+ *  
+ *  Adds \boldsymbol around mathematics that appears in a section
+ *  of an HTML page that is in bold.
+ *  
+ *  ---------------------------------------------------------------------
+ * 
+ *  Copyright (c) 2009-2020 The MathJax Consortium
+ * 
+ *  Licensed under the Apache License, Version 2.0 (the "License");
+ *  you may not use this file except in compliance with the License.
+ *  You may obtain a copy of the License at
+ * 
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ * 
+ *  Unless required by applicable law or agreed to in writing, software
+ *  distributed under the License is distributed on an "AS IS" BASIS,
+ *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ *  See the License for the specific language governing permissions and
+ *  limitations under the License.
+ */
+
+MathJax.Extension["TeX/autobold"] = {
+  version: "2.7.9"
+};
+
+MathJax.Hub.Register.StartupHook("TeX Jax Ready",function () {
+  var TEX = MathJax.InputJax.TeX;
+  
+  TEX.prefilterHooks.Add(function (data) {
+    var span = data.script.parentNode.insertBefore(document.createElement("span"),data.script);
+    span.visibility = "hidden";
+    span.style.fontFamily = "Times, serif";
+    span.appendChild(document.createTextNode("ABCXYZabcxyz"));
+    var W = span.offsetWidth;
+    span.style.fontWeight = "bold";
+    if (W && span.offsetWidth === W) {data.math = "\\boldsymbol{"+data.math+"}"}
+    span.parentNode.removeChild(span);
+  });
+  
+  MathJax.Hub.Startup.signal.Post("TeX autobold Ready");
+
+});
+
+MathJax.Ajax.loadComplete("[MathJax]/extensions/TeX/autobold.js");
+// @license-end