<subtitle> Article Subtitle

This element always holds a subsidiary part of a title, but it has different applications in several contexts:
  • Within the standards document metadata, a <subtitle> holds one secondary part of one of the standards document component titles: <intro>, <main>, or <compl>.
  • Some structural components of a standards document (such as Indexes and Tables of Contents) may take also contain <subtitle>s.


Within the metadata, the extended versions of each of the standards document introductory, main, or complementary titles (<intro-title-wrap>, <main-title-wrap>, or <compl-title-wrap>) may contain one or more <subtitle>s.

Base Attributes

Models and Context
May be contained in
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 | bold | fixed-case | italic | monospace | num | overline | roman | sans-serif | sc | strike | underline | 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 | tbx:entailedTerm | xref | sub | sup | break | citation-alternatives | element-citation | mixed-citation | std)*

Tagged Samples
Subtitle to main title
 <intro>Information Technology</intro>
  <main>Telecommunications and information exchange between 
  <subtitle>Local and metropolitan area networks</subtitle>
 <compl level="1">Technical reports and guidelines</compl>
 <compl-title-wrap level="2">
  <label>Part 5:</label>
  <compl>Media Access Control (MAC) Bridging of Ethernet V2.0 in 
   Local Area Networks</compl>
 <full>Information Technology — Telecommunications and information 
  exchange between systems — Local and metropolitan area networks — 
  Technical reports and guidelines — Part 5: Media Access Control 
  (MAC) Bridging of Ethernet V2.0 in Local Area Networks</full>
Subtitle to complementary title
 <intro>2015 ASME Boiler Pressure Vessel Code</intro>
  <main>Rules for Construction of Nuclear Facility Components</main> 
 <compl level="1">Division 1</compl>
 <compl-title-wrap level="2">
  <compl>Subsection NH</compl> 
  <subtitle>Class 1 Components in Elevated Temperature Service</subtitle>
 <full>2015 ASME Boiler Pressure Vessel Code, Section III: Rules 
  for Construction of Nuclear Facility Components, Division 1, 
  Subsection NH: Class 1 Components in Elevated Temperature Service</full>