<fileformat> controls the output format to be generated. Possible formats are: ASCII, HTML, (La)TeX, PDF, Postscript, DocBook... If the specified format is not supported by the executing software, or the <fileformat> statement is missing respectively, output is generated in ASCII format.
Specifying the output format determines also the file extension (see also <filename>):
      Format       keyword      fileextension
    -----------------------------------------
      ASCII         ascii          .txt
     (La)TeX       (la)tex         .tex
       PDF           pdf           .pdf
    Postscript    postscript       .ps
      HTML          html           .html
     DocBook       docbook         .xml
                <fileformat> may appear only once.
<output>
(see also <output>)
<!-- output in ASCII format -->
 <fileformat>ascii</fileformat>
                
<!-- the table shall be generated as a TeX file -->
<fileformat>tex</fileformat>
                
<!-- output in PDF format -->
<fileformat>pdf</fileformat>
                
<!-- output in DocBook format -->
<fileformat>docbook</fileformat>