about

This link relation is defined in http://tools.ietf.org/html/rfc6903.

It is used by the Content Store web service to represent the relationship between a list or in-box item and the content item it references. You can retrieve the content item referenced by a list/in-box item by following the entry's about link.

The following example shows a list item's list pool handle, which contains an about link to the content item it represents.

<entry xmlns="http://www.w3.org/2005/Atom">
  <id>http://host-ip-address/webservice/escenic/list-pool/handle/583347</id>
  <title type="text">(type=1 ,id=204697 ,pubId=-1)</title>
  ...
  <link 
    rel="about"
    href="http://host-ip-address/webservice/escenic/content/204697"
    type="application/atom+xml"/>
  ...
</entry>