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 history of changes in the name of the book with different editions preserved in a publisher’s tag set.
<!ELEMENT custom-meta %custom-meta-model; >
(meta-name, meta-value)
The following, in order:
Recording a CrossMark identifier:
...
<counts>
<page-count count="1"/>
</counts>
<custom-meta-group>
<custom-meta>
<meta-name>crossmark</meta-name>
<meta-value>2013-02-15T11:32:17</meta-value>
</custom-meta>
</custom-meta-group>
</book-part-meta>
...
...
<book-meta>
...
<custom-meta-group>
<custom-meta>
<meta-name>acidfree</meta-name>
<meta-value>yes</meta-value>
</custom-meta>
<custom-meta>
<meta-name>price</meta-name>
<meta-value>US $28.50</meta-value>
</custom-meta>
<custom-meta>
<meta-name>miscinfo</meta-name>
<meta-value>CDs included, Windows XP required; 1GB processor,
512 MB RAM recommended</meta-value>
</custom-meta>
</custom-meta-group>
...
</book-meta>
...