title: Special Characters Restriction Rule in XSD
body: <p>restrict special characters in my XSD validation , i am able to handle , some characters with this pattern    <strong>"([a-zA-Z0-9_.' !@#$%^*()_+={}|/:;,>?/`~ ])+"</strong>    </p>
  
  <p>but not able to handle below :</p>
  
  <p>"
  &amp;
  '
  &lt;
  \
  ®
  ™</p>
  
  <p>any ideas ?</p>
  
  <p>also not able to handle them with [^] pattern</p>