title: HTML encode on a XSLT
body: <p>I would like to convert some value from a XML attribute into valid HTML with entities. So that for example the string <code>"olá"</code> from the XML would be transformed from the XSLT into <code>"ol&amp;#225;"</code></p>
  
  <p>I can't find any xsl function to do this.
  Any ideas ?</p>