Martin clarified that it would find typos like 1.23m, in place of 12.3m, although where there is no sketch and no loop, I cannot work out how Therion would know that.
There is huge difference between stations position and local scale of image calculated from positions of stations.
BTW you may very simple create th2 file without walls just extract only station lines from th2 file and save it under different name obviously with identical header.