The data required for the conversion to MCNP input is stored in program memory. Memory usage may be an issue on some computers. Data is stored for each voxel cell; the amount of data depends on the conversion options. When cells are created, the data includes the surfaces bounding each cell; this surface data is not stored for lattice conversions. When the extent of a voxel cell is greater than a single pixel, the cell data includes an index to the material mixture for the cell.
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