,
this procedure offers little over await-sleep!.
</p>
<p>This procedure must (like the a-sync procedure) be called in the same
thread as that in which the event loop runs.
</p>
<p>Exceptions may propagate out of this procedure if they arise while
setting up (that is, before the first call to &rsquo;await&rsquo; is made), which
shouldn&rsquo;t happen unless memory is exhausted.  Exceptions thrown by
&rsquo;thunk&rsquo;, if not caught locally, will propagate out of event-loop-run!.
</p>
<p>Here is an example