jQuery selectors for select / option:selected
<p>How should I understand</p>

<pre><code>$("select option:selected")
</code></pre>

<p>in the following code ?</p>

<p>(taken from <a href="http://api.jquery.com/selected-selector/" rel="nofollow">here</a>)</p>

<pre><code>$("select").change(function() {
   ...
   $("select option:selected").each(function () {
      ...
   });
   ...
})
</code></pre>

<p>Is it all selected options <b>in all selects</b> in the document ?</p>

<p>Is it somehow related to the current select, $(this) ?</p>
