Thanks @SomeoneElse for all the links and @zby-cz for creating the issue, I will continue the discussion on it.
For our own custom OMT tiles, @maelito2000 choose X<id>
with X=n/w/r
but I don’t remember why…
Well, we already have a production map with clickable POIs using our OMT tiles, so I don’t think we need a POC for Shortbread tiles. It was so obvious to me that the type/id should be included in the OSMF demo tiles (even though it’s not officially in the shortbread specifications) that I was really surprised it wasn’t there.