old hosts.cfg tag "login"

Hi,

I got this old tag "login" on all my servers.
It has been there forever and upgrading from bb to xymon and a couple of 
xymon versions later I can't find the source.
What is this login and can I remove it?
Can't find any references to why it is there or it's purpose.
Must be some inheritance from bb I guess.

As it is production I don't dare to remove it either.
Anyone that knows what it is?

ie.
192.168.0.1    myhost     # login


Cheers,
- Roland