<li>the <dfn>file timestamp</dfn> (if available, zero by default)</li>
<li>at the <a href="@@edit-point-control"><dfn>edit point</dfn></a></li>
<li>at the <dfn>playhead</dfn></li>
<li>the <dfn>file timestamp</dfn> (if available, zero by default)</li>
<li>at the <a href="@@edit-point-control"><dfn>edit point</dfn></a></li>
<li>at the <dfn>playhead</dfn></li>