    RAND-SEED:  Specify a random number seed.

    Usage:

        rand_seed log-file seed

    or:

        rand_seed log-file

    Writes a random number generator state structure derived from the
    specified seed to the given log file (which must already exist and be
    non-empty), in a record with type 'r' and index equal to that of the
    last existing record.

    If invoked with just a log file as argument, the program prints the
    random number seed from the state stored in the log file with index -1.
    (Note, however, that the random number seed in use may have been
    changed by a later call of rand-seed, after some iterations have been
    written to the log file.)

    When rand_seed is not called, programs generally default to a seed of 1.

                Copyright (c) 1995-2003 by Radford M. Neal