Custom Metadata

Wrapper element for a single piece of metadata not otherwise defined in the Tag Suite.


This element can be used as an escape-hatch to record additional metadata that a publisher or archive wishes to preserve (so that the intellectual work to capture that content will not be lost) even though there is no direct expression for the metadata in the Tag Set.
The <custom-meta> element allows for an infinite variety of name/value pairs, with few constraints on the length or content of the value. This element will probably be used for special cases, product-specific material, or other unusual metadata, for example, the journal-history information preserved in at least one publisher’s tag set.

Related Elements

The element <custom-meta-group> is a grouping element that holds one or more <custom-meta> elements. Each <custom-meta> element contains a name/value pair, <meta-name> and <meta-value> respectively, which name and provide a value for a single metadata field.


id Document Internal Identifier
specific-use Specific Use
xlink:actuate Actuating the Link
xlink:href Href (Linking Mechanism)
xlink:role Role of the Link
xlink:show Showing the Link
xlink:title Title of the Link
xlink:type Type of Link
xml:base Base
xml:lang Language
xmlns:xlink XLink Namespace Declaration

Content Model

<!ELEMENT  custom-meta  %custom-meta-model;                          >

Expanded Content Model

(meta-name, meta-value)


This element may be contained in:

Example 1

Recording a CrossMark identifier:

<page-count count="1"/>

Example 2

Recording a previous journal title:
<journal-id>BioDiv Mut</journal-id>
<journal-title>Biodiversity &amp; Mutation</journal-title>
<article-title>Black Smokers Sufrous Life</article-title>
<pub-date iso-8601-date="2009"><year>2009</year></pub-date>
<meta-value>Evolution of Biodiversity</meta-value>