To setup a nightly build of the Project Reality sources & simulators, do
the following:

1.  Follow the instructions in PR/doc/mmake for setting up your local source 
    tree.

2.  Create a directory $HOME/build.

3.  Put copies of the mnightly and filter_buildlog scripts in $HOME/build.

4.  Create a file called 'crontab' in $HOME/build with the following line:
    (cron will fire off this script every morning at 2:01am).

	1 2 * * * /bin/sh $HOME/build/mnightly

5.  Log this file into the system's crontab directory with the command
    "crontab $HOME/build/crontab"

6.  Every night at 2am, cron will execute $HOME/build/mnightly, which will
    automatically run a top level make clobber, p_tupdate, and make install.

    If you want to execute the script by hand for testing purposes or to
    benefit from some recent checkins, cd to $HOME/build and run ./mnightly;
    you can track the progress with a tail -f $WORKAREA/rawbuildlog.

    The formatted build log will be left behind in $HOME/build as ultra64.log,
    should you want to peruse it later at your leisure.