   numel numnp nmat nmode  (This is for a tdata)
     3   4  1  0
matl no., E modulus, mass, and Area
0    30000000   47.2828e2  2.
el no.,connectivity, matl no 
0        0    1    0
1        0    2    0
2        0    3    0
node no. coordinates
0     0.00000   0.00000   0.000
1     0.00000 120.00000   0.000
2   120.00000 120.00000   0.000
3   120.00000   0.00000   0.000
prescribed displacment x: node  disp value
    1 0.0
    2 0.0
    3 0.0
    -10
prescribed displacment y: node  disp value
    1 0.0
    2 0.0
    3 0.0
    -10
prescribed displacment z: node  disp value
    0 0.0
    1 0.0
    2 0.0
    3 0.0
    -10
node with point load and load vector in x,y,z
    0  0.00000   -10000.00   0.00000
-10 
element with stress and tensile stress vector 
-10
