

          random limit | seed [seedval]
               Generate a pseudorandom integer number greater than or
               equal to zero and less than limit.  If seed is
               specified, then the command resets the random number
               generator to a starting point derived from the seedval.
               This allows one to reproduce a random number sequence
               for testing purposes.  If seedval is omitted, then the
               seed is set to a value based on current system state
               and the current time, providing a reasonably
               interesting and ever-changing seed.
