title: PHPExcel: showing header & footer not only in printing preview
body: <p>I am generating excel document via PHPExcel library, I've set the header &amp; footer sections. But when I open the document I dont see header neither footer. The header &amp; footer is shown when viewing print preview. Also when I insert header &amp; footer via menu, I can see my header &amp; footer values I've set in PHPExcel.</p>
  
  <p>Does anyone now how to show header &amp; footer by default?</p>
  
  <p>Many thanks</p>