<version> Version Statement
A full version statement, which may be only a number, for data or software that is cited or described.
The <version> element is not a generic, all purpose version number; its use is limited to inside the citing elements: <mixed-citation>, <element-citation>, <product>, <related-article>, and <related-object>. See Related Elements below for other version elements and attributes.
The content of <version> may be a simple version number (such as “<version>16</version>” or “<version>XII</version>”). More complex version statements may contain a textual statement (“Fifth PC version, patches 2-3”), dates that the dataset covers, the version number as an ordinal (“3rd” or “3rd version”), or superscripted ordinals (“4<sup>th</sup>” or “10<sup>th</sup> version”).
Models and Context
May be contained in
<!ELEMENT version (#PCDATA %version-elements;)* >
Expanded Content Model
(#PCDATA | sub | sup)*