Severe bug; cross section station and splays are not exported

[tarquinwj]

Export a plan survey containing cross sections to Therion format.
The Therion XVI does not contain any stations or splays for the cross sections. They also fall off the edge of the drawing area in the .th2 file, which makes them almost impossible to use.
Ideally it should also have the dashed line pointing to the station, and the direction arrow in the sketch, but these are not essential.

Android 11
SexyTopo 1.6.1