The
hd
element represents a free-floating heading that is not associated with the hierarchical structure of the document.
The
ref
attribute may be used to associate an
hd
element with a construct that it acts as a heading for.
Usage Example
<hd>NOTICE OF THE REMAINS OF A SPECIES OF EQUUS,</hd>
<p>Found associated with the extinct Edentals and Toxodon at Punta Alta, in Bahia Blanca,
and with the Mastodon and Toxodon at Santa Fé, in Entre Rios.</p>
Allowed parents
annotation,
m:annotation-xml,
aside,
block,
body,
caption,
code,
description,
item,
d:longdesc,
note (block variant),
note (phrase variant),
object,
quote,
section (section variant),
section (verse variant),
d:simplifiedLanguageDescription,
d:summary,
td,
th,
d:tour and
verse
Allowed children
This element may contain text.
This element may contain the following children: abbr,
annoref,
ssml:break,
char,
code,
d,
definition,
emph (text variant),
emph (phrase variant),
expansion,
rend:linebreak,
ln,
m:math,
name,
note,
noteref,
num,
object (text variant),
object (phrase variant),
pagebreak,
ssml:phoneme (text variant),
ssml:phoneme (phrase variant),
ssml:prosody (text variant),
ssml:prosody (phrase variant),
ref,
its:ruby,
s,
ssml:say-as (text variant),
ssml:say-as (phrase variant),
span (phrase variant),
span (text variant),
sub,
ssml:sub (text variant),
ssml:sub (phrase variant),
sup,
term,
time,
ssml:token (text variant),
ssml:token (phrase variant) and
w
Content model and additional requirements
optional attributes:
@about,
@by,
@class,
@content,
@continuation,
@datatype,
@desc,
@its:dir,
@its:translate,
@property,
@ref,
@rel,
@resource,
@rev,
@role,
@ssml:onlangfailure,
@typeof,
@xml:base,
@xml:id,
@xml:lang and
@xml:space
one or more of
a choice of either one of the 42 elements:
abbr,
annoref,
char,
code,
d,
definition,
emph,
emph,
expansion,
its:ruby,
ln,
m:math,
name,
note,
noteref,
num,
object,
object,
pagebreak,
ref,
rend:linebreak,
s,
span,
span,
ssml:break,
ssml:break,
ssml:phoneme,
ssml:phoneme,
ssml:prosody,
ssml:prosody,
ssml:say-as,
ssml:say-as,
ssml:sub,
ssml:sub,
ssml:token,
ssml:token,
sub,
sup,
term,
time,
w or
w
or text
end of choice
Note that in addition to restrictions presented in the content model above,
use of this element must also respect the following requirement:
- The
hd
element must neither be empty nor contain only whitespace.
Such requirements take precedence over any conflicting statements in the
content model or in the lists above of allowed children and parents.
Namespace
http://www.daisy.org/ns/z3998/authoring/