title: retaining only superscript and subscript on pasting in TinyMCE
body: <p>Hi I am trying to create a TinyMCE editor, and in this I want user to be able to paste from wherever he wants.</p>
  
  <p>The only restriction i want to put , when a user paste from his source my TinyMCE box should remove all the rich-text properties ( e.g. color, font-style, heading, table ) except superscript and subscript.</p>
  
  <p>I want only superscript and subscript to be retained.</p>
  
  <p>here is my TinyMCE code. Currently I am using paste_as_text:true , so it is removing every rich text style including superscript and subscript.</p>
  
  <p><a href="http://fiddle.tinymce.com/KAfaab/4" rel="nofollow noreferrer">http://fiddle.tinymce.com/KAfaab/4</a></p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
   tinyMCE.init({
           selector: 'textArea',  // change this value according to your HTML
           menubar: false,
           width: "840",
           toolbar: 'undo redo | superscript subscript | link image',
           height: "225",
           resize: 'both',      
           encoding: "xml",
           elementpath: true,
           paste_word_valid_elements: "superscript,subscript,sub,sup",
           plugins: "paste",
           paste_retain_style_properties: "superscript,subscript,sub,sup",
           paste_as_text:true
  
  
       });
  </code></pre>
  
  <p></p>
  
  <pre><code> &lt;form method="post" action="dump.php"&gt;
       &lt;textarea name="content"&gt;&lt;/textarea&gt;
   &lt;/form&gt;
  </code></pre>