When an edition, version, or similar statement contains ordinals (such as “3rd”) or words such as “3rd print edition”, this attribute can preserve the edition/version number as a simple, machine-processable number, such as “3”.
Used on Elements: <article-version>, <edition>, <version>
|The numeral or alphabetic character that indicates the edition number||The straight unadorned edition number, for machine processing. Typically this is a number such as “4” or an alphabetic character such as “A”.|
|Restriction||@designator is an optional attribute; there is no default.|
... <mixed-citation> <collab>National Committee for Clinical Laboratory Standards</collab>. <source>Performance standards for antimicrobial disk susceptibility tests</source>. <comment>Approved standard</comment>. <edition designator="7">7<sup>th</sup> ed.</edition> p. <fpage>M2</fpage>–<lpage>A7</lpage>. ... </mixed-citation> ...