<key>

The element key specifies a TAN-key file that defines concepts that may be invoked by @which.

For more discussion, see the section called “Keyword Vocabulary (TAN-key)”

Formal Definition

~ed-stamp?, 
   (~inclusion | (<comment>* & 
      
         (@href | (<IRI>, ~metadata-human, <checksum>*, <location>+))))

Defined at: TAN-core.rng

Used by: ~key-list

[Caution]Caution

No file may import keys that have duplicate IRIs.

[Caution]Caution

Every element with a <location> should have at least one document available.

[Caution]Caution

Every TAN file referred to by way of an element containing <location> should have an @id that matches the <IRI> of the parent of the <location>

[Caution]Caution

No element may point to a TAN file that has an identical @id value; the only exception is a <see-also> pointing to an older or new version.

[Important]Important

If a target file does not explicitly give the <body>'s @in-progress the value of true() a warning will be returned. Target file is marked as being in progress.

[Important]Important

If a target file has a <see-also> marked as a new version (update) a warning will be returned.

[Important]Important

If @when-accessed predates one or more dates in a target file, a warning will be returned.

[Caution]Caution

An element's @which must have a value that corresponds to a <name>, either in the core TAN keyword or an associated TAN-key file, that is marked as applying to that element.

[Caution]Caution

Keywords (values of @which) must be unique for a given element name.

[Caution]Caution

Any element that takes @which must have keywords defined for that element.

[Caution]Caution

Keys are integral parts of a document. Access to at least one version is absolutely mandatory.

Example 8.137. <key>

   <head>
      .........
      <licensor who="park"/>
      <key>
         <IRI>tag:parkj@textalign.net,2015:TAN-key:ar.cat</IRI>
         <name>Keywords for Aristotle's Categories</name>
         <location href="../TAN-key/ar.cat.TAN-key.xml" when-accessed="2017-03-10T11:50:15.499-05:00"/>
      </key>
      <source xml:id="grc">
         .........
      </source>
      .........
   </head>


[Note]Note

Taken from ar.cat.tan-a-div.claims