Hi folks (and particularly Stacho), Just trying to revive an idea we had last year, which solves a significant problem; drawing cross sections through multiple passages/stations. The idea is to be able to select a subset of legs and splays from a survey, for export (eg. as an XVI). https://github.com/therion/therion/issues/156 group foo 2 3 2.706 351.41 -77.19 3 - 0.440 232.38 13.38 3 - 0.824 193.77 56.68 3 - 0.648 149.94 47.91 endgroup And in .thconfig: source "cave.th" select foo@survey1.cave select bar@survey1.cave select baz@survey2.cave export map -projection [elevation 180] -fmt xvi -output "sections_a.xvi" Can anyone see any better ways to do this with existing stuff, or should I keep trying to persuade someone to implement it? Stacho, would you be able to say if such a thing would actually be possible to implement? Cheers, Tarquin