or that is not described in the documentation, may change at any time until it is documented.</p>
<p>If the reference documentation and the implementation differ, the reference documentation will almost always take precedence and the implementation will be fixed in the next release. The reference documentation will also take precedence over anything stated in a guide.</p>
<h2><a class="anchor" id="event_order"></a>
Event order</h2>
<p>The order of arrival of related events is not guaranteed to be consistent