Welcome to part two of our feature parity series! In it, we present returning features that were originally lost when OCaml gained multicore support. The addition of multiple domains means that the underpinning design decisions behind certain features have had to change significantly, and work is ongoing to adapt them and return them to OCaml 5. One of these features is memory profiling, which, after much theoretical consideration, has been successfully adapted to OCaml 5. Memory profiling is...