!doctype html public "-//w3c//dtd xhtml 1.0 strict//en" "3./tr/xhtml1/dtd/

html xmlns="3./1999/xhtml

head

meta http-equiv="tent-type" tent="text/html; charset=gb2312"/

title500 - ?/title

/head

body

h1/h1

h2500 - ?/h2

h3??/h3

/body

/html