This venue's process tree — internal.

A limiter and a feed, exactly as every other venue in the family, even though the feed behind them is a poll rather than a socket. That sameness is the point: a consumer's supervision tree looks identical whichever venue it holds.

The limiter here has an incident behind it

Configured from the ceilings capabilities/0 declares, like every venue. What is specific to this one is that its feed calls acquire/3 rather than check/3 — when limiting was first enabled, check/3 took this venue from 87 of 87 symbols delivering to 8 of 87 in one cycle, because a poll that finds no capacity simply skips the symbol.