An nrl file extension is related to the iManage developed by Autonomy a HP company.
NRL file extension - iManage data
What is nrl file? How to open nrl files?
File type specification:
File extension nrl is associated with the iManage, a set of tools that allows users to process, review, manipulate and publish documents developed by HP.
A .nrl file contains various data used for internal purposes of the iManage.
This nrl file type entry was marked as obsolete and no longer supported file format.
This type of file is no longer actively used and is most likely obsolete. This is typically the case for system files in old operating systems, file types from long discontinued software, or previous versions of certain file types (like documents, projects etc.) that were replaced in higher versions of their original programs.