Ah, in-memory. That reads like it's a physical log. Should we add in-memory log to avoid
confusion for others like me? ;-)
That could be clearer (I don't remember being confused by this, but lots
of times what I read in the man pages is foreshadowed on the lists). Maybe
"Specify a session log for recording information about write" could be
"Configures an in-memory session log for..."?