The documentation for the df3 file format in section 6.7.11.11 is a bit
vague, as it stands now. It doesn't specify the order in which the
voxels should be written.
Is it (for X*Y*Z voxels):
<0,0,0>
<1,0,0>
...
<X,0,0>
<0,1,0>
...
<X,1,0>
<X,2,0>
...
<X,Y,0>
<0,0,1>
...
<X,Y,Z>
or is it some other order?
/martin
