HTML 2.0 (RFC 1868)	HTML 2.x (RFC 2070)	HTML 3.2	HTML 4.01 Transitional / Frameset	HTML 4.01 Strict	ISO-HTML	XHTML 1.0 FE Transitional	XHTML 1.0 FE Frameset	XHTML 1.0 FE Strict	XHTML 1.0 SE Transitional	XHTML 1.0 SE Frameset	XHTML 1.0 SE Strict	XHTML 1.1 (m12n 1.0 FE/SE DTD)	XHTML 1.1 + Legacy (m12n 1.0 FE/SE DTD)	XHTML m12n 1.0 FE/SE Abstract
h1	O						O
h2
h3
h4
h5
h6
a	O						O			O
img
br
em
strong
code
samp
kbd
var
cite
tt
b
i
p	O
ul
ol
dir	O						O			O				O
menu
dl	O
pre
xmp	O
listing
blockquote	O
form	X														X
isindex	O						O			O
hr	O														O
address	O						O
input	O						O			O
select
textarea
span		O		O
q
bdo
sup		O
sub
u			O
strike
big
small
dfn
applet
font
basefont
script			O				O
map			O				O			O
div			O
center			O				O			O
table			O
noscript				O			O
noframes				O			O			O
fieldset				O
s				O			O			O
abbr
acronym
object
iframe
label
button
ins				O
del