Website https://www.texasspeleologicalsurvey.org/software/walls/tsswalls.php
Author D. McKenzie
Language: C++ (MFC)
Platform: Windows
The install contains two examples: a brief intro and a tutorial.
The project seems unmaintained. A. Edwards has set up a github repo to restart the project:
https://github.com/wallscavesurvey/walls
Features
Compass import
SEF (Survey Exchange Format) import/export
Screen maps with scalebar and north-arrow
Units: english and metric
Geomagnetic calculator for declination
SVG roundtrip
Shapefile export
VRML export and viewer (Walls3D)
SVG export
TO CONTINUE