display
  Q1 for illustrating the influences of various factors when the
  default SELREF=T is active.
 
  A single cell has steady sources of mass and of C1.
 
  Heavy linear under-relaxation is used so as to necessitate many
  sweeps for convergence.
 
  Neither the solution nor the number of sweeps is influenced by
  XULAST, YVLAST, ZWLAST OR RHO1.
 
  Both are influenced by: RESFAC, FIINIT(C1) and the relaxation
  factor.
 
  enddis
#pause
 
TEXT(Influences On Convergence; Steady
 
SOLVE(P1,C1)
PATCH(SOURCE,PHASEM,1,1,1,1,1,1,1,1)
PATCH(SOURCEM,PHASEM,1,1,1,1,1,1,1,1)
PATCH(OUTLET,PHASEM,1,1,1,1,1,1,1,1)
COVAL(OUTLET,P1,1.,0.0)
 
  The larger is the closer is the value of the following quantity
  the smaller will be the number of iterations; but the accuracy of
  the solution will be little affected.
FIINIT(C1)=10
 
  Changing either of the next two statements will change the
  (un-converged) solution
RELAX(C1,LINRLX,0.01); RESFAC=0.01
 
  Changing any of the next five statements will have no effect
  on the solution
 zwlast=100; yvlast=10; xulast=1/10; rho1=.0001
 
COVAL(SOURCEM,P1,FIXFLU,1); COVAL(SOURCE,C1,FIXFLU,1)
LSWEEP=5000; TSTSWP=10; NPLT=10; ORSIZ=0.2