1                          me, method: 1-linear elements, 2-3pt cent dif
   25                          nem, no terms in exact sol
    1                          ipr, print control
  800                          itmx, max no iterations for sor
    1.0e-0                     bar, aspect ratio for channel
     .1e-5                     eps, tolerance par for sor
     1.5e0                     om, relaxation parameter (sor), lambda