SyncEvent: clarification about manual parameter

From manual page: https://php.net/syncevent.construct

current description of manual parameter says:

Manual reset event objects allow all waiting processes through until the object is reset.

which mentions only the custom object (manual=true), but not the default (manual=false).
maybe clarify with something like this:

By default, SyncEvent object reset()s automatically after successful wait()ing.
This behavior is disabled with manual set true - object must reset() explicitly to prevent waiting processes through.

Custom behavior may be demonstrated by this example:

<?php declare(strict_types=1);

$e = new SyncEvent('example', 1, 1);# manual=true, prefire=true

$e->wait();# will not wait (prefire=true)
$e->wait();# will not wait (manual=true, was not reset)

$e->reset();
$e->wait(1000);# will wait here

?>

Use the linked SyncEvent constructor manual page as the entry point and locate the documentation for its manual parameter. Clarify both the default automatic-reset behavior and the explicit-reset behavior when manual is true, using the supplied example if appropriate; the work is done when the parameter description covers both modes accurately.