Hello  
Attribute: adm-CustomAttributeDN1..X
Holds a DN name and provides a link to the object on the WebUI, like manager and managedBy.  
Configuration options Link type: Organizational unit, Group, User
Configuration options Target: Self, Blank
Funtion: Based on the configuration, it opens the default view form for the choosen object (type).  
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For easy navigation on the webUI / on-hand additional informations.  
- Cheers