<myRes xmlns:its="http://www.w3.org/2005/11/its">
  <head>
      <its:rules xmlns:its="http://www.w3.org/2005/11/its" version="2.0">
        <its:param name="allowedcharParam">allowedchar</its:param>
	<its:allowedCharactersRule allowedCharacters="[^*+]" selector="//content[@id=$allowedcharParam]"/>
</its:rules>
  </head>
  <body>
    <content id="allowedchar">Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam
      nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed
      diam voluptua.</content>
  </body>
</myRes>
