The
head
element contains meta information about the complete or partial document contained in the enclosing
document
.
The meta information in the
head
element is not document content in the context of Z39.98-AI documents, but may be used for display and other purposes when
rendering documents into alternate formats.
Refer to
Document metadata for the normative specification of required metadata in
head
.
optional attributes:
@about,
@by,
@class,
@content,
@datatype,
@desc,
@its:dir,
@its:translate,
@property,
@rel,
@resource,
@rev,
@role,
@ssml:onlangfailure,
@typeof,
@xml:base,
@xml:id,
@xml:lang and
@xml:space
Note that in addition to restrictions presented in the content model above,
use of this element must also respect the following requirements:
- The
head
element must include a
meta
element identifying the Z39.98-AI profile the document conforms to (z3998:profile).
- The document must not include more than one
meta
element identifying a Z39.98-AI profile.
- A
meta
element containing the profile name must be specified (z3998:name).
- A
meta
element containing the profile version must be specified (z3998:version).
- Every feature must have its name specified (z3998:name).
- Every feature must have its version specified (z3998:version).
- The
head
element must include a
meta
element with a unique identifier (dc:identifier).
- The
head
element must include a
meta
element identifying the document publisher (dc:publisher).
- The
head
element must include a
meta
element indicating the document modification date (dc:date).
- The
head
element must include only a single
dc:date
property.
- The
dc:date
property must be of the form CCYY-MM-DDThh:mm:ssZ.
Such requirements take precedence over any conflicting statements in the
content model or in the lists above of allowed children and parents.