* 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 *
     15              2                 2              2           0           0               0
*  LAYER NO * Z_COORDINATE * DIVISION RATIO *  (NO_Z_DATA+1 data)
     1            0.0             -1.4
    11            0.1              2.0
    16            0.15          
*  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   
*  LAYER_FROM * TO *  MAT_IDS * (NO_LAYERES_DATA data)
* 1:A2:C
           1    10     1    2
          11    15     2    2  
*  BASE_MAT_ID * MAT_ID * LAYER_POSITION * (NO_SURFACE data )
*      3            51          17                               
