1 3 51 
These  first menu functions provides the user by 
the following possibilities:
 1. to set a value for the QCD-lambda6 parameter;
 2. to define the QCD scale. It can be defined as a
constant or as a squared sum of particles momenta.
For the last  case digits imputed by user are 
transformed to particle numbers. For example: 
input '13' means Q^2=abs( (p1-p3)^2 );
 3. to display alpha(s) plot in the region defined
by the user.

  If Q is defined as a constant, the corresponding
value of alpha=GG^2/(4*PI) is displayed under menu.
