* 2D_to_3D file
*   This data file is necessary when GEOMETRY(12)=4
*  NO_LAYERS *  NO_BASE_MAT_IDS * NO_LAYERS_DATA * NO_Z_DATA * COORD_ID * NO_SURFACES * EX_DIREC *
     10              4                 3              2           0           0               0
*  LAYER NO * Z_COORDINATE * DIVISION RATIO *  (NO_Z_DATA+1 data)
     1            0.0             1.0
     3            0.02            1.2
    11            0.3
*  When NO_LAYER_DATA =0
*  Z_COODINATES  (NO_LAYERS+1 data)
*    0.0
*    1.0
*  LAYER NO  * Z_COORDINATE * DIVISION_RATIO * 
*  BASE_MAT_IDS *  (NO_BASE_MAT_IDS data)
                       1    2    13    14
*  LAYER_FROM * TO *  MAT_IDS * (NO_LAYERES_DATA data)
           1     2     1    2    3   4
           3     3     1    1    3   4
           4    10     1    1    0    0
*  BASE_MAT_ID * MAT_ID * LAYER_POSITION * (NO_SURFACE data )
*      3            51          17                               
