Prevent that Tidy transforms XML into HTML

Ragnar Heil <[email protected]>
Newsgroups gmane.comp.web.html-tidy.user
Organization http://freemail.web.de/
Message-ID <[email protected]>

Hi 
how can I prevent that Tidy transform an invalid source-XML-File into an XML-file with HTML-tags?
It just adds <HEAD><BODY> and so on


regards
Ragnar

// sample config file for HTML tidy
indent: auto
indent-spaces: 2
wrap: 72
markup: yes
output-xml: yes
input-xml: no
doctype: auto
show-warnings: yes
numeric-entities: yes
quote-marks: yes
quote-nbsp: yes
quote-ampersand: no
break-before-br: no
uppercase-tags: no
uppercase-attributes: no
char-encoding: ascii 
write-back: yes
new-inline-tags: cfif, cfelse, math, mroot,
  mrow, mi, mn, mo, msqrt, mfrac, msubsup, munderover,
  munder, mover, mmultiscripts, msup, msub, mtext,
  mprescripts, mtable, mtr, mtd, mth, component, short_intro, long_intro, reference, category, date, body2, external_link_text1, external_link_text2, external_link_text3,external_link_url1, external_link_url2, external_link_url3, bblocation, image_small, image_medium, image_large
new-blocklevel-tags: cfoutput, cfquery, component, short_intro, long_intro, reference, category, date, body2, external_link_text1, external_link_text2, external_link_text3,external_link_url1, external_link_url2, external_link_url3, bblocation, image_small, image_medium, image_large
new-empty-tags: cfelse 
new-pre-tags:
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