The value of this parameter contains a URL to the XML document. The XML document is external to the HTML page.
If you use the xmlsource param then you can not use the xml param (they are mutually exclusive).
<HTML>
...
<APPLET code="diputree.class" archive="diputree.jar"
height="300" width="200">
<PARAM NAME="xmlsource" VALUE="diputree.xml">
</APPLET>
...
</HTML>
the diputree.xml file
<diputree>
<has>
<b>
<lt>it works!</lt>
</b>
</has>
</diputree>">