 1 12 51 
   The start the Monte Carlo integration.  The
result of integration is displayed on the screen.
  Adaptive Monte Carlo program VEGAS is used.  It
will carry out 'Itmx' iterations of integration
improving  Monte Carlo grid after each iteration.
The user can monitor this process by 'Error' 
column displayed on the screen.  The optimal grid
is found if 'Error' does not decrease from
iteration to iteration.
 If accuracy of integration is not sufficient,
the user can continue calculation by calling this
menu item again. Grid is saved from call to call.
