Reading this doc: http://qubesosfasa4zl44o4tws22di6kepyzfeqv3tg4e3ztknltfxqrymdad.onion/doc/rpc-policy/
I see the example:
[user@dom0 user ~]$ cat /etc/qubes-rpc/policy/qubes.FileCopy
(...)
@tag:work @default ask
@tag:work @tag:work allow
@tag:work @anyvm deny
@anyvm @tag:work deny
@anyvm @anyvm ask
What is @tag:work
here? As far as I know, we can distinguish qubes by giving them a name, and not a “tag”. So, how does one tag a qube with “work” string?