When I use validator.w3c.org on my page it complains that no DOCTYPE is set. But the PageTemplate (metal master) looks like this:: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"> <html metal:define-macro="standard" tal:define="dummy python:request.RESPONSE.setHeader('Content-Type','text/html;; charset=iso-8859-1');dummy here/StopCache"> <head> .... Why does it not recognize my DOCTYPE?