tunnelx - 20190701-1 main

Tunnel enables you to draw cave surveys based on Survex-compatible
centreline data. Drawings will be adjusted to fit if the underlying
data moves due to loop closures. Original drawings/scans/pockettopo
imports can be used as a basis to draw over. Complex multi-layered
surveys can be drawn, with flexible facilties for colour-grouping
and adding images or background maps. The application can use data
stored online and works on all major platforms.