`NO_IO_SYSTEM_PROC` and `NO_IO_SYSTEM_PROC_WITH_LOCALS` are legacy names. It would be good to rename these to `__SYSTEM_PROC` and `__SYSTEM_PROC_WITH_LOCALS`.
NO_IO_SYSTEM_PROCandNO_IO_SYSTEM_PROC_WITH_LOCALSare legacy names. It would be good to rename these to__SYSTEM_PROCand__SYSTEM_PROC_WITH_LOCALS.