[xsl] ALWAYS assignment of XSL stylesheets to XML file before aplying them ?

Sorry for this newbie question:

But I saw a lot of tutorials where XSL stylesheet are always assigned/integrated in XML docs before they are
really applied. I mean

I could apply a XSLT styplesheet directly to an XML doc beginning with

<?xml version="1.0" encoding="....">
<TOPTAG>
...
</TOPTAG>

Instead most of the tutorials link the XSLT stylesheet at first into the XML document:

<?xml version="1.0" encoding="....">
<?xml-stylesheet type="text/xsl" href="D:\test\myxslt.xsl"?>
<TOPTAG>
...
</TOPTAG>

Is there a reason for this ?

Ben 






		
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