Schema Documentation - Generic Document Profile
version 1.0

The about element

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The about element provides a brief, human-readable explanation of the nature of its parent (e.g., the file format, resolution, audience, etc.).

The element is intended to provide a label for end users of the content -- for example, to explain the format of the content to facilitate content selection.

Allowed parents

d:simplifiedImage, d:simplifiedLanguageDescription and d:tactile

Allowed children

This element may contain text.

This element may contain the following children: ssml:break, char, emph, object, pagebreak, ssml:phoneme, ssml:prosody, its:ruby, ssml:say-as, span, sub, ssml:sub, sup and ssml:token

Content model and additional requirements

optional attributes: @about, @by, @class, @content, @continuation, @datatype, @desc, @its:dir, @its:translate, @property, @rel, @resource, @rev, @role, @sel:selid, @ssml:onlangfailure, @typeof, @xml:base, @xml:id, @xml:lang and @xml:space
one or more of
a choice of
either one of the 14 elements: char, emph, its:ruby, object, pagebreak, span, ssml:break, ssml:phoneme, ssml:prosody, ssml:say-as, ssml:sub, ssml:token, sub or sup
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 about 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/features/description/