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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
A
|
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> |
|
|
|
B
|
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
|
|
|
|
. |
|
|
|
|
|
|
. |
|
|
|
|
|
|
. |
... |
|
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|
|
|
|
|
|
|
|
|
|
. |
|
|
|
|
|
|
. |
|
|
|
|
|
|
. |
|
|
|
|
|
|
. |
|
|
|
|
|
|
. |
|
|
|
|
|
C
|
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 |
|
D
|
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
|
|
E
|
Tag
|
Block
Parent
|
Inline
Parent
|
Inline
Content
|
Block
Content
|
| em |
x
|
x
|
x
|
|
| embed |
x
|
x
|
param+x
|
x
|
|
|
|
|
. |
|
|
|
|
. |
|
|
|
|
. |
|
|
|
|
. |
|
|
|
|
. |
F
|
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 |
|
G
|
Tag
|
Block
Parent
|
Inline
Parent
|
Inline
Content
|
Block
Content
|
| |
|
|
|
|
| |
|
|
|
|
H
|
Tag
|
Block
Parent
|
Inline
Parent
|
Inline
Content
|
Block
Content
|
Head
Content
|
| head |
<html> |
|
|
|
x
|
| hr |
x
|
|
|
|
|
| html |
|
|
body, frameset, head |
|
|
| hx |
x
|
|
x
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
| . |
|
|
|
|
|
I
|
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
|
|
|
|
|
J
|
Tag
|
Block
Parent
|
Inline
Parent
|
Inline
Content
|
Block
Content
|
| |
|
|
|
|
| |
|
|
|
|
K
|
Tag
|
Block
Parent
|
Inline
Parent
|
Inline
Content
|
Block
Content
|
| kbd |
x
|
x
|
x
|
|
| keygen |
form
|
|
|
|
L
|
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 |
|
|
|
|
|
M
|
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
|
|
N
|
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
|
|
O
|
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
|
|
| . |
|
|
|
|
| . |
|
|
|
|
| . |
|
|
|
|
| . |
|
|
|
|
P
|
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
Q
|
Tag
|
Block
Parent
|
Inline
Parent
|
Inline
Content
|
Block
Content
|
| q |
x
|
x
|
x
|
|
S
|
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
|
|
|
T
|
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
|
|
|
U
|
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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|
|
|
|
|
