RND (n)

   Synopsis:
      Returns a random number between 0 and (n - 1).

   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 )
