Začátek přeposílané zprávy:

Od: Tarquin Wilton-Jones via Therion <therion@speleo.sk>
Předmět: Re: [Therion] ceiling step in the wrong direction when exported from topodroid
Datum: 20. září 2019 14:14:06 SELČ
Komu: therion@speleo.sk
Kopie: Tarquin Wilton-Jones <tarquin.wilton-jones@ntlworld.com>
Odpověď na: List for Therion users <therion@speleo.sk>

NZSS and UIS default to having the tail of the symbol in one direction,
while SKBB has it the other way. Therion seems to default to using SKBB
notation, while TopoDroid probably uses UIS.

As I may say, the idea of SKBB is that ticks are "in air” as in case of pit or floor-step line. So the ceiling is higher on side where are ticks.

Martin