Hi Tom,
the ArchiTerra contour lines are a grouped set of hotspots (points) and lines (constraints).
To change the contour line level: select the contour lines (the set is grouped so wherever you click ArchiCAD automatically select anything) and click on the point tool icon.
In the appearing dialog type the new level and confirm the setting by clicking the OK button: the contour line is immediately updated following your settings.
To modify the shape: suspend the group and drag the hotspots/points (pay attention: not the lines but the points!!!) in the new position, the connected lines/constraints will be automatically update in order to follow your modification.
That’s all.
Friendly
Fabrizio
Fabrizio Diodati
Graphisoft Italy Srl | Via Rossignago 2/A Spinea Venezia 30038 Italy