Commit a change to the startcmd section (done while in Florida) that

mentions you need to restart the event system to fire off the start
command again.

Currently, you cannot name the startcmd in a tevc command cause its
name is unknown. Something to do with how objects are renamed in the
parser and that they are not done below top level (inside a
subroutine). Not sure how you get around that.

www/tutorial/tutorial.html

@@ -757,7 +757,8 @@ be unpacked in, all separated by spaces.
      <h3>Starting your application automatically</h3>
 <p>
 
-You can start your application automatically when your nodes boot by
+You can start your application automatically when your nodes boot for
+the first time (experiment is started or swapped in) by
 using the <tt>tb-set-node-startcmd</tt> NS extension. The argument is
 a command string (pathname of a script or program, plus arguments)
 that is run as the <tt>UID</tt> of the experiment creator, after the
@@ -799,7 +800,16 @@ The start command is implemented using
 <a href="docwrapper.php3?docname=advanced.html#ProgramObjects">
 Program Objects</a>, which are described in more detail in the
 <a href="docwrapper.php3?docname=advanced.html">
-Advanced Tutorial.</a>
+Advanced Tutorial.</a> Note that the start command is run only when
+the experiment is swapped in. If you want to rerun the experiment, you
+can swap the experiment out and back in, or you can reboot all of the
+nodes in your experiment. If rebooting, you must fire off the program
+object yourself by restarting the 
+<a href="docwrapper.php3?docname=advanced.html">Event System</a> 
+on <tt>users.emulab.net</tt>:
+
+<code><pre>
+eventsys_control replay &lt;pid&gt &lt;eid&gt </code></pre>
 
 <p>
 <li> <a NAME="SyncServer"></a>