- ?maxage int
- # >0 means entries start with a 16-hex-digit
- # time_t and a single space
- # this time_t _is_ part of the value as seen !
+ ?on_mintstamp obj
+ # on_mintstamp present and not empty list: provides a
+ # script which returns the current mintstamp. This
+ # means entries start with a 16-hex-digit signed
+ # integer known as a tstamp; occasionally,
+ # on_mintstamp will be called and then entries whose
+ # tstamp is < mintstamp will be deleted automatically.