lol, haha...

no it's in NIP-01 in the tags section, it doesn't really explain what they are for

they usually are supposed to have as 3rd parameter the relay to look at

i'm just writing a test and i put in a couple of these tags into the test case but now idk how it equates to getting a match on the event - the purpose is testing that each filter field in the query picks up the event correctly...

i'll be digging into the actual query logic so i may end up finding the answer in the code