it_002dyield_0021' class='copiable-anchor'> &para;</a></span></dt>
<dd><p>This is a convenience procedure which will surrender execution to the
relevant event loop, so that code in other a-sync or compose-a-sync
blocks can run.  The remainder of the code after the call to
await-yield! in the current a-sync or compose-a-sync block will
execute on the next iteration through the loop.  It is intended to be
called within a waitable procedure invoked by a-sync (which supplies
the &rsquo;await&rsquo; and &rsquo;r