improper nesting	/tools/validator/problems.html#nesting
doctype	/tools/validator/doctype.html
document type declaration	/tools/validator/doctype.html
html	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.1
head	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2
title	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2.1
base	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2.2
isindex	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2.3
link	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2.4
meta	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2.5
nextid	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.2.6
body	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.3
h1	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.4
h2	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.4
h3	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.4
h4	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.4
h5	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.4
h6	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.4
p	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.5.1
pre	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.5.2
xmp	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.5.2.1
listing	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.5.2.1
address	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.5.3
blockquote	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.5.4
ul	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.1
li	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.1
ol	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.2
dir	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.3
menu	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.4
dl	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.5
dt	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.5
dd	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.6.5
cite	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.1
code	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.2
em	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.3
kbd	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.4
samp	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.5
strong	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.6
var	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.1.7
b	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.2.1
i	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.2.2
tt	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.2.3
a	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.7.3
br	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.8
hr	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.9
img	http://www.w3.org/MarkUp/html-spec/html-spec_5.html#SEC5.10
form	http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.1.1
input	http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.1.2
select	http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.1.3
option	http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.1.3.1
textarea	http://www.w3.org/MarkUp/html-spec/html-spec_8.html#SEC8.1.4