Thanks, yeah attribution is an interesting one. You usually have the cryptographic address of the maker but not any link to FTX account that might be responsible, and as you say the ability to correlate an order with other positions

> Certain order types that may rest on the exchanges order book but either don't have a specific price or display doesn't make sense.

I suppose orders than are designed to only be consumed by a matching engine don't need to be made public unless they are matched.