How to produce the "XML declaration line" in the middl

Hello,

I am transforming a text file with XSLT 1.0.
I would like to produce this tag <?xml version="1.0" encoding="UTF-8"?>
in the middle of an text document.


<xsl:template name="HeaderTemplate" match="/">

--vxvxv
Content-disposition: form-data; name="p_file_in";
filename="noColonsSpacesOrAmpersandsInHere.typ"
Content-type: text/xml

<?xml version="1.0" encoding="UTF-8"?>
<xsl:copy-of select="*"/>
--vxvxv--
</xsl:template>
</xsl:stylesheet>


But XMLSpy doesn't allow that.  I guess I have to escape characters like
< or ?, but I have no idea how.

Any comments?

Thanks
Houman