Volume and cubature
Three kinds of volume can be measured:
- Volumes of a closed object, 
- Volumes over and under a certain level of liquid, 
- Volumes of embankment and excavation between two meshes. 
Different configurations can be used:
- If you select one closed mesh before launching the command Volume, you will be able to compute either the volume of the object, or the volumes over and under a water level. 
- If you select several closed meshes, a window appears showing the volume of each mesh. Labels are also created. 
- If you select an open mesh, you will not be able to compute its volume, but only the volumes over and under a water level. 
- If you select two open meshes, you will be able to compute the volumes of embankment and excavation between them.