> What would the advantage of the text dump? Isn't it the equivalent to the Therion file. I don't think it would be difficult to code in. Guess it would force me to look at the bits I have ignored, currently TopoParser ignores the fixed station information

The text export is nicely formatted human readable and makes it clear which date and trip comments (‘Actual trip’ data) apply to which shots.  The shot comments are also included.

The therion export does not contain the trip comments or the shot comments, but it does include derived coordinates and a text dump of all of the drawings.