NGLayout HTML Tag Reference Chart

New Layout: HTML Tag Handling Chart

Authors: Rick Gessner
Updated: 23 October 1998

[eds. note: This document extracted from email. Original message follows]
During a recent tag handling fest in the parser, it occured to me that we don't have a "how to handle tag x" document. So I've created a the following table of HTML tags and how we handle them in the parser. I needed this for debugging purposes, and others may benefit from it during testing.

Anyway, it's a work in progress, so send me issues.

-Rick

Tag	Block Parent	Inline Parent	Inline Content	Block Content
a	x	x	x
abbr	x	x	x
acronym	x	x	x
address	x		x
applet	x	x	x	x
area	<map>

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content	Other Content
b	x	x	x
base	<head>
basefont	x		x	x
bdo	x	x	x
bgsound	<head>+x	x
big	x	x	x
blink	x	x	x
blockquote	x		x	x
body	<html>, <noframe>		x	x		del, ins
br	x	x
button	x	x	x	x
	.
	.
	.	...

	.
	.
	.
	.
	.

Tag	Block Parent	Inline Parent	Inline Content	Block Content
caption	table		x
center	x		x	x
cite	x	x	x
code	x	x	x
col	colgroup, table
colgroup	table		col

Tag	Block Parent	Inline Parent	Inline Content	Block Content
dd	dl		*	x
del	body		x	x
dfn	x	x	x
dir	x		li
div	x		x	x
dl	x		dd, dt
dt	dl		x

Tag	Block Parent	Inline Parent	Inline Content	Block Content
em	x	x	x
embed	x	x	param+x	x
				.
				.
				.
				.
				.

Tag	Block Parent	Inline Parent	Inline Content	Block Content
fieldset	x		legend+x	x
font	x	x	x
form	x		keygen+x	x
frame	frameset
frameset	frameset, html		frame, frameset, noframes

Tag	Block Parent	Inline Parent	Inline Content	Block Content

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
head	<html>				x
hr	x
html			body, frameset, head
hx	x		x
.
.
.
.
.
.
.
.
.
.
.

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
i	x	x	x
iframe	x	x	x	x
ilayer	x		x	x
img	x	x
ins	body		x	x
isindex	head+x

Tag	Block Parent	Inline Parent	Inline Content	Block Content

Tag	Block Parent	Inline Parent	Inline Content	Block Content
kbd	x	x	x
keygen	form

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
label	x	x	x
layer	x		x	x
legend	fieldset		x
li		x	x	(if inside ol/ul)
link	head
listing

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
map	x	x	area
marquee	x		x	x
menu	x		li
meta	head
multicol	x		x	x

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
nextid	head
nobr	x	x	x
noembed	x		x	x
noframes	frametset+x		body+x	x
nolayer	x		x	x
noscript	x		x	x

Tag	Block Parent	Inline Parent	Inline Content	Block Content
object	x	x	param+x	x
ol	x		li
optgroup	select, optgroup		option, optgroup
option	optgroup, select		text
.
.
.
.

Tag	Block Parent	Inline Parent	Inline Content	Block Content
p	x		x
param	applet, object
plaintext
pre	x		x*

*Exceptions:
applet, basefont, big, blink, font, iframe, img, nobr, object, small, sub, sup

Tag	Block Parent	Inline Parent	Inline Content	Block Content
q	x	x	x

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
s	x	x	x
samp	x	x	x
script	head+x	x	text
select	x	x	optgroup, option
small	x	x	x
sound	head+x	x
spacer	x	x
span	x	x	x
strike	x	x	x
strong	x	x	x
style	head		text
sub	x	x	x
sup	x	x	x

Tag	Block Parent	Inline Parent	Inline Content	Block Content	Head Content
table	x		caption, col,colgroup, tr, thead, tbody, tfoot
tbody	table		tr
td	tr		x	x
textarea	x	x	text
tfoot	table		tr
th	tr		x	x
thead	table		tr
title	head		text
tr	table, tbody, thead, tfoot		th, td
tt	x	x	x

Tag	Block Parent	Inline Parent	Inline Content	Block Content
u	x	x	x
ul	x		li

VWX!

Tag	Block Parent	Inline Parent	Inline Content	Block Content
var	x	x	x
wbr	x	x
xmp
!doctype			html
!--

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