[Therion] Hidroniveler data input

Hello, I have one more question about Therion. Is it possible to add some data gotten from a hidroniveler (I don't know is it correct in english ;/ ) to any survey? The question came out of the situation we have now: once we've done a cave survey we realized that there could be quite big relational error. That's because the cave is very narrow - it is very diffucult to measure clino and azimuth. That's why we are going to use hidroniveler. At least to know exact depth of the cave. I would be greate to have a possibility to add such data to therion survey source. I'm sorry if I made my self unclear. Please let me know. Vilius A. Speleoclub "Ænigma" www.speleo.lt