of
the loop as may previously have been set by event-loop-block!, should
event-loop-run! be applied to it again.
</p>
<p>Applying this procedure to an event loop has no effect if the event
loop is not actually running.  A few await-* procedures
(await-put-bytevector!, await-put-string!, await-accept! and
await-connect!) do not pass control to the event loop if they can
operate immediately without waiting, so if (i) the event loop
concerned has been set blocking by event-loop-block!, (ii) this
procedure is i