Used on such elements as edition number (<edition>) and version (<version>) to hold an unadorned numeric or alphabetic value of the edition or version number for machine search, when the number is a phrase or textual value.


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 numberThe 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.


<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>&ndash;<lpage>A7</lpage>.