Place an xml-stylesheet processing 
instruction in the prolog immediately after the XML 
declaration (if any) and before the document type declaration (if any).
 This processing instruction should have a 
type attribute with the value 
text/xml and an href attribute 
whose value is an absolute or relative URL pointing to the style sheet. 
<?xml version="1.0"?> <?xml-stylesheet type="text/xml" href="compositions.xsl"?>
Eventually application/xml+xslt will replace text/xml. 
IE uses the non-existent MIME media type
 text/xsl instead. 
This is also how you attach a CSS style sheet to a 
document. The only difference here is that the 
type attribute has the value 
text/xml instead of text/css.