In regards to knowing what universe is on a DMX line, I use the last slot of the universe as the identifier.
In Park I set 1/512 at 01%, 2/512 at 02%, 3/512 at 03% etc...
This allows everyone with a DMX tester, such as Swisson, DMXCat, Dynomite, to go to channel 512 and 'see' what universe is on...