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<subtitle> Document Subtitle

Subordinate part of a title for a document or document component.

Usage/Remarks

In Metadata
In the book metadata (<book-meta>) the book title and subtitle are identified separately and tagged with two different elements, the <book-title> element and <subtitle> element. In the metadata for a book component (<book-part-meta>), the title of the book component and the subtitle are also identified separately and tagged with two different elements, the <title> element and the <subtitle> element.
In Citations
Within a bibliographic reference citation, the subtitle of a document cannot be preserved separately as this Tag Set identifies no cited-subtitle elements. How the subtitle should be tagged depends on how the citation is tagged.
For references tagged with the <element-citation> element, which does not permit untagged text, there are two choices:
  • The subtitle may be included with the title inside the <article-title> element for journal articles or inside the <source> element for book titles, proceedings titles, and other titles; or
  • The subtitle may be tagged as <named-content> with a @content-type of “subtitle”.
For references tagged with the <mixed-citation> element, there are three choices:
  • The subtitle may be included with the title inside the <article-title> element for journal articles or inside the <source> element for book titles, proceedings titles, and other titles;
  • The subtitle may be left as untagged data characters within the text of the reference; or
  • The subtitle may be tagged as <named-content> with a @content-type of “subtitle”.

Best Practice in Citations

Although this Tag Set cannot enforce either practice, retrieval performance will be enhanced if the subtitle for all cited material is consistently placed within the <article-title> element for journal articles and within the <source> element for books, proceedings, reports, and other documents. When marked as either a <named-content> or left as untagged text, the subtitle is easy to lose to searching. It is also not always easy to identify, particularly with historical or foreign material, which part of a multi-part title is the main title and which the subtitle.
Related Elements
In the metadata for a book or book-part such as a chapter, there are several elements concerned with the title of a book or book component. Such titles are contained within either the container element <book-title-group> (inside the <book-meta>) or the container element <title-group> (inside book parts, Tables of Contents, Indexes, etc.):
  • The <book-title> is the full title of the entire book in the original language of the document.
  • Book parts such as a Dedication, a chapter, an appendix, an Index, or a Table of Contents use the element <title> for their full titles in the original language of the document.
  • The <subtitle> is a subordinate or auxiliary title that adds information to one of the full titles or modifies a full title. Subtitles may modify either <book-title>s or structural <title>s.
  • The <alt-title> is another version of a book title or a structural title, usually created so that the title can be processed in a special way, for example, a short version of the title for use in a Table of Contents, an ASCII title, a title without equations, or a version of the title to be used in the right-running-head.
  • The <trans-title-group> is also a container element (inside either a <book-title-group> or a <title-group>) that holds together a translated title (<trans-title>) and its translated subtitle (<trans-subtitle>). The translated title is a version of the title translated into a language other than the original language of publication, and the matching subtitle is a version of the subtitle translated into a language other than the original language.
Attributes
content-type
specific-use

Base Attributes

id
xml:base
xml:lang
Models and Context
May be contained in
<abstract>, <ack>, <answer>, <answer-set>, <app>, <app-group>, <bio>, <book-title-group>, <explanation>, <index-title-group>, <notes>, <option>, <question>, <question-preamble>, <question-wrap-group>, <sec>, <title-group>, <toc-entry>, <toc-title-group>, <trans-abstract>, <verse-group>
Description
Any combination of:
Content Model
<!ELEMENT  subtitle     (#PCDATA %subtitle-elements;)*               >
Expanded Content Model

(#PCDATA | email | ext-link | uri | inline-supplementary-material | related-article | related-object | hr | bold | fixed-case | italic | monospace | overline | overline-start | overline-end | roman | sans-serif | sc | serif | strike | underline | underline-start | underline-end | ruby | alternatives | inline-graphic | inline-media | private-char | chem-struct | inline-formula | tex-math | mml:math | abbrev | index-term | index-term-range-end | milestone-end | milestone-start | named-content | styled-content | fn | target | xref | sub | sup | x | break)*

Tagged Sample

Subtitle of a book

...
<book-meta>
 <book-id>...</book-id>
 <book-title-group>
  <book-title>Sequence - Evolution - Function</book-title>
  <subtitle>Computational Approaches in Comparative Genomics</subtitle>
 </book-title-group>
 ...
 <publisher>
  <publisher-name>Kluwer Academic Publishers</publisher-name>
  <publisher-loc>Norwell, MA</publisher-loc>
 </publisher>
 <permissions>
  <copyright-statement>&copy; 2003 by Kluwer Academic 
   Publishers.</copyright-statement>
  <copyright-year>2003</copyright-year>
 </permissions>
 <abstract>...</abstract>
</book-meta>
...