Ask <Len> <Var num>
  -------------------

       Example : Ask 15 3

  Waits  for  the  user  to input a string that is  up  to  15
  characters long,  and stores the string in the variable <Var
  num>.  Valid values for <Len> are 1 to 255. <Var num> may be
  any number between 1 and 20.