[Therion] Survex use 0/180° not +90/-90

Hi all, I had an issue today on data with Vulcain topofil data. On Vulcain topofil the clino is from 0 to 180° and 0 = +90 90 = 0 180 = -90 I didn't find anything on survex documentation about that. Do you have any idea about the right setup for the survex line ? I have no idea what is the right word for the ?? Example : units compass grad units clino grad data normal from to fromcount tocount compass ?? left right up down 1-0 1-1 6762.0 6799.0 385.00 119.00 0.40 0.30 1.00 1.00 1-1 1-2 6799.0 6999.0 235.00 106.00 0.40 0.40 0.90 0.20 C.S.