id summary reporter owner description type status priority milestone component version resolution keywords cc 21 Feature request: optionally output older version 3d file Duncan Collis Olly Betts "It would be useful to be able to choose to output an older version 3d file, eg, to share with somebody who for some reason does not wish to (or is unable to) run the latest version of Survex; or for use with other software , eg, Therion, which may not be able to read the latest 3d format. Currently it is necessary to have multiple Survex installations to achieve this." enhancement closed minor 1.2.0 cavern fixed