[Therion] The context of sd

Hello It would appear that sd works within the centreline/endcentreline part but not as part of a survey, however would it not be better if this worked within the survey context. Eg I have a few sump surveys with some dry surveys, all the sumps are grouped into a single higher level survey for convenience survey sumps <===== It would be good to put the sd in here, rather than having to specify it in <===== every file, which is tedious when I decide to change it include sump1.th include sump1a.th include sump2.th .... include sumpn.th equate # # etc endsurvey This would be also useful when areas of the cave have been surveyed to a lower grade. just a thought Andrew