[Therion] Entrance for cave list

Page 17 of the Therion hook states that station <station name> Under the context survey should be used as the entrance identifier for a cave to be used in cave-list export. However, this gives an error unknown command -- entrance Now I can sort of get round it using Station 0 "" entrance in the centerline, but this does not define a cave so the list is a bit weird. Am I missing something? V 5.3.16 on windows 10 Andrew