[TYPO3-english] Include html template into html template

[Perica Matic]

Hi,

I want to separate my main html template into 3 templates - header, mainbody 
and footer. How can i include ie. header html template into my main html 
template. I tried this:

  1 = FILE
  1.10.file = fileadmin/cms/test.html

assigned that to marker test, and put ###test### in main template but it 
didn't work :-( Thx.