culdir: In which direction to enumerate:
- newer: List oldest first. Note: culstart has to be before culend.
- older: List newest first (default). Note: culstart has to be later than culend.
and yet the only time-related properties defined are:
culfrom: The timestamp to start enumerating from.
culto: The timestamp to end enumerating.
I'd love it if this supported start and stop, as that'd give us consistency with logevents. But the as-documented parameters don't exist.