After a fragment is created, you can assign structure cells to the fragment. The cells are arranged in a three-dimensional grid to form a connective structure in the fragment. You can assign a different structure cell to each fragment. Thus, different sections of your part will have different interior structures.
For example, if you have a translation of X=2, Y=1 and Z=0, a crossing of structure cells will be positioned after the second grid cell in X-direction and the first grid cell in Y-direction. If the red grid stands out of the fragment, the complete structure cells will still be realized in the structure and you may get overlapping structure cells.
If the cell size and the voxel size of the fragment are identical, one cell is inserted into every grid cell. If the cell is smaller than the voxel size more than one structure cell is inserted into one grid cell.
If the cell size is bigger than the voxel size, the structure cells will simply occupy more than one grid cell. In that case, only part of a structure cell may be inserted at the end of the fragment.