<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>