diff --git a/js/term/widgets/radiobutton.js b/js/term/widgets/radiobutton.js
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+/**
+ **      ==============================
+ **       O           O      O   OOOO
+ **       O           O     O O  O   O
+ **       O           O     O O  O   O
+ **       OOOO   OOOO O     OOO  OOOO
+ **       O   O       O    O   O O   O
+ **       O   O       O    O   O O   O
+ **       OOOO        OOOO O   O OOOO
+ **      ==============================
+ **      Dr. Stefan Bosse http://www.bsslab.de
+ **
+ **      COPYRIGHT: THIS SOFTWARE, EXECUTABLE AND SOURCE CODE IS OWNED
+ **                 BY THE AUTHOR(S).
+ **                 THIS SOURCE CODE MAY NOT BE COPIED, EXTRACTED,
+ **                 MODIFIED, OR OTHERWISE USED IN A CONTEXT
+ **                 OUTSIDE OF THE SOFTWARE SYSTEM.
+ **
+ **    $AUTHORS:     Christopher Jeffrey, Stefan Bosse
+ **    $INITIAL:     (C) 2013-2015, Christopher Jeffrey and contributors
+ **    $MODIFIED:    by sbosse (2017-2021)
+ **    $REVESIO:     1.3.1
+ **
+ **    $INFO:
+ **
+ **    radiobutton.js - radio button element for blessed
+ **
+ **     Added:
+ **       - Simplified group management (using options.group identifier instead radioset parent)
+ **
+ **  Usage:
+ **
+ **  var obj = blessed.radiobutton({
+ **      checked: options.value||false,  
+ **      left: options.left,
+ **      right : options.right,
+ **      top: options.top||0,
+ **      group:options.group,
+ **      mouse: true,
+ **      inputOnFocus: true,
+ **      height: 1,
+ **      text:options.text||'empty'
+ **    });
+ **    screen.append(obj);
+ **    obj.on('select',function);
+ ** 
+ ** Events: 
+ **   'check' 'uncheck' 'select'
+ **    $ENDOFINFO
+ */
+
+/**
+ * Modules
+ */
+var Comp = Require('com/compat');
+
+var Node = Require('term/widgets/node');
+var Checkbox = Require('term/widgets/checkbox');
+
+/**
+ * RadioButton
+ */
+
+function RadioButton(options) {
+  var self = this;
+
+  if (!instanceOf(this,Node)) {
+    return new RadioButton(options);
+  }
+
+  options = options || {};
+  this.group=options.group;
+  Checkbox.call(this, options);
+
+  this.on('check', function() {
+    var el = self,
+        group=self.group;
+    while (el = el.parent) {
+      if (el.type === 'radio-set'
+          || el.type === 'form') break;
+    }
+    el = el || self.parent;
+    var index=0;
+    el.forDescendants(function(el) {
+      if (el.type !== 'radio-button' || el === self || el.group!=group) {
+        return;
+      }
+      index++;
+      el.uncheck();
+    });
+  });
+}
+
+//RadioButton.prototype.__proto__ = Checkbox.prototype;
+inheritPrototype(RadioButton,Checkbox);
+
+RadioButton.prototype.type = 'radio-button';
+
+RadioButton.prototype.render = function() {
+  this.clearPos(true);
+  this.setContent('(' + (this.checked ? '*' : ' ') + ') ' + this.text, true);
+  return this._render();
+};
+
+RadioButton.prototype.toggle = RadioButton.prototype.check;
+
+/**
+ * Expose
+ */
+
+module.exports = RadioButton;