<em class="parameter"><code>dst</code></em>
 will be set to contain all areas that are 
either in <em class="parameter"><code>dst</code></em>
 or in <em class="parameter"><code>rectangle</code></em>
, but not in both.</p>
<div class="refsect3">
<a name="cairo-region-xor-rectangle.parameters"></a><h4>Parameters</h4>
<div class="informaltable"><table class="informaltable" width="100%" border="0">
<colgroup>
<col width="150px" class="parameters_name">
<col class="parameters_description">
<col width="200px" cla