Hi. I've some data I need to export to an XML file. How can I apply a XSLT to this XML file without open and insert manually the link to the XSLT file?

I've tried to include the XML file into another too, though it's impossible because the exported XML is "standalone". Is it possible to remove the standalone declaration (without manually open the file I mean...)

I need just one of the two solution (include the XSLT link or remove the standalon attribute), or even a 3rd (if there is...)

Many thanks