title: How to add Header Content-type to static pages which doesn't have extensions?
body: <p>I have a XML page www.example.com/page, but my server outputs it as text/plain as it doesn't have any extension.</p>
  
  <p>So I want to add XML Header via .htaccess to all the files which doesn't have extension with a condition that the <strong>file exists</strong>.
  As if file doesn't exist, program is executed from database and it decides what header to output, so I don't want to break that part by forcibly changing header.</p>