.Nm launchd
kills any remaining processes with the same process group ID as the job.
Setting this key to true disables that behavior.
-.It Sy HopefullyExitsFirst <boolean>
-This optional key causes programs to exit earlier during system shutdown.
-This key exists because some jobs do more than flush buffers and exit like
-they're supposed to. The use of this key should be considered a
-temporary solution until the software can be changed to only flush dirty buffers
-and then exit.
-.It Sy HopefullyExitsLast <boolean>
-This optional key causes programs to exit later during system shutdown. This
-key exists because some jobs don't reference count their clients, and therefore
-do not know when it is safe to exit. The use of this key should be considered a
-temporary solution until the software can be changed to properly reference
-count clients.
.It Sy LowPriorityIO <boolean>
This optional key specifies whether the kernel should consider this daemon to be low priority when doing file system I/O.
.It Sy LaunchOnlyOnce <boolean>