HTML The Definitive Guide (147 page)
Read HTML The Definitive Guide Online
Authors: Chuck Musciano Bill Kennedy
A.2 The Grammar
The grammar is a composite of the HTML 4.0 standard tags and special extensions to the language as enabled by the latest versions of NCSA Mosaic, Netscape Communication's Netscape Navigator, and Microsoft's Internet Explorer.
The rules are in alphabetical order. The starting rule for an entire document is named
html_document
.
a_tag
{
a_content
}0
a_content
[
1
]
::=
heading
|
text
abbr_tag
::=
text
acronym_tag
::=
text
address_tag
::=
{
address_content
}0
address_content
::=
p_tag
|
text
applet_content
::= {}0
body_content
applet_tag
::=
applet_content
b_tag
::=
text
basefont_tag
::=
body_content
bdo_tag
::=
text
big_tag
::=
text
blink_tag
::=
block
::= {
block_content
}0
block_content
::=
|
basefont_tag
|
blockquote_tag
|
center_tag
|
dir_tag
|
div_tag
|
dl_tag
|
form_tag
|
listing_tag
|
menu_tag
|
multicol_tag
|
nobr_tag
|
ol_tag
|
p_tag
|
pre_tag
|
table_tag
|
ul_tag
|
xmp_tag
blockquote_tag
::=
body_content
body_content
::=
|
|
address_tag
|
block
|
del_tag
|
heading
|
ins_tag
|
layer_tag
|
map_tag
|
marquee_tag
|
text
body_tag
::=
{
body_content
}0
caption_tag
::=
body_content
center_tag
::=
body_content
cite_tag
::=
text
code_tag
::=
text
colgroup_content
::= {
colgroup_tag
::=
colgroup_content
content_style
::=
abbr_tag
|
acronym_tag
|
cite_tag
|
code_tag
|
dfn_tag
|
em_tag
|
kbd_tag
|
kbd_tag
|
q_tag
|
strong_tag
|
var_tag
dd_tag
::=
flow
del_tag
::=
flow
dfn_tag
::=
text
dir_tag
[
2
]
::=
{
li_tag
}
div_tag
::=
body_content
dl_content
::=
dt_tag
dd_tag
dl_tag
::=
{
dl_content
}
dt_tag
::=
text
em_tag
::=
text
fieldset_tag
::=
flow
::= {
flow_content
}0
flow_content
::=
block
|
text
font_tag
::=
style_text
form_content
[
3
]
::=
|
|
body_content
|
fieldset_tag
|
label_tag
|
select_tag
|
textarea_tag
form_tag
::=
frameset_content
::= |
noframes_tag
frameset_tag
::=
h1_tag
::=
text
h2_tag
::=
text
h3_tag
::=
text
h4_tag
::=
text
h5_tag
::=
text
h6_tag
::=
text
head_content
::=
|
|
|
|
|
style_tag
|
title_tag
head_tag
::=
{
head_content
}0
heading
::=
h1_tag
|
h2_tag
|
h3_tag
|
h4_tag
|
h5_tag
|
h6_tag
html_content
::=
head_tag body_tag
|
head_tag frameset_tag
html_document
::=
html_tag
html_tag
::=
html_content
i_tag
::=
text
ilayer_tag
::=
body_content
ins_tag
::=
flow
kbd_tag
::=
text
label_content
[4]
::=
|
body_content
|
select_tag
|
textarea_tag
form_tag
::=
layer_tag
::=
body_content
legend_tag
::=
li_tag
::=
flow
listing_tag
::=
literal_text
map_content
::= {}0
map_tag
::=
map_content
marquee_tag
::=
style_text
menu_tag
[
5
]
::=
multicol_tag
::=
body_content
nobr_tag
::=
text
noembed_tag
::=
noframes_tag
::=
noscript_tag
::=
object_content
::= {}0
body_content
object_tag
::=
object_content
ol_tag
::=
{
li_tag
}
optgroup_tag
::=
{
option_tag
}0
option_tag
::=
plain_text
p_tag
::=
text
physical_style
::=
b_tag
|
bdo_tag
|
big_tag
|
blink_tag
|
font_tag
|
i_tag
|
s_tag
|
small_tag
|
span_tag
|
strike_tag
|
sub_tag
|
sup_tag
|
tt_tag
|
u_tag
pre_content
::=
|
|
a_tag
|
style_text
pre_tag
::=
{
pre_content
}0
q_tag
::=
text
s_tag
::=
text
samp_tag
::=
text
script_tag
[6]
::=
select_content
::=
optgroup_tag
|
option_tag
select_tag
::=
{
select_content
}0
server_tag
[
7
]
::=
plain_text
small_tag
::=
text
span_tag
::=
text
strike_tag
::=
text
strong_tag
::=
text
style_tag
::=
sub_tag
::=
text
sup_tag
::=
text
table_cell
::=
td_tag
|
th_tag
table_content
::=
|
|
| tr_tag table_tag ::= [ { { td_tag ::= body_content text ::= { text_content ::= | |
caption_tag
]
colgroup_tag
}0
table_content
}0
text_content
}0