> Combined with the inside/outside flags, I now have 100% coverage :)
> The removing-redundant voxels first could be a problem though, some people might want to do auto-normals without loosing their 'internal' voxels. I could add that the redundancy-removal is performed on a seperate array, instead of the actual voxel, and copy the normals into the VoxelSection again later (thus keeping the redundant voxels). Thoughts?

in voxel_tools.pas, FindInside is a separate procedure. Just call that first (as removeRedundantVoxels does).

> About the TOP/BOTTOM removal rule we discussed: that's all that's left to add (and the textfile mapping table).