Next line is problem title      << 2D TRUSS ANALYSIS >>
EXAMPLE 5.1
NN NE NM NDIM NEN NDN
 4  4  1  2    2   2
ND NL NCH NPR NMPC
 5  2  2   2   0
Node#  X   Y
 1     0   0
 2    40   0
 3    40  30
 4     0  30
Elem#  N1  N2  Mat#  Area  TempRise (NCH=2 Elem Char: Area, TempRise)
 1      1   2   1     1     0
 2      2   3   1     1     0
 3      1   3   1     1     0
 4      4   3   1     1     0
DOF#  Displacement
 1     0
 2     0
 4     0
 7     0
 8     0
DOF#  Load
 3     20000
 6    -25000
MAT#  PROP1   PROP2
 1    29.5E6  12E-6
B1  i  B2 j  B3  (Multi-point constr. B1*Qi+B2*Qj=B3)

