Rnd (n)

   Synopsis:
      Returns a random number, greater than or equal to 0, but less than n

   Notes:
      The return value is a floating-point number, so Rnd (10) will produce a
         number like 7.79433435135619.

   Examples:
      ! Get a random integer in the range 0-9
      LET result = Int ( Rnd (10) )
      ! Get a random integer in the range 1-10
      LET result = Int ( Rnd (10) + 1 )
