tive</strong>: Only negative sub-regions are filled</li>
</ul>
<div style="break-before: page; page-break-before: always;"></div><h1 id="overlay-rules-1"><a class="header" href="#overlay-rules-1">Overlay Rules</a></h1>
<img src="overlay/overlay_rules/ab.svg" alt="AB" style="width:50%;">
<h2 id="union-a-or-b"><a class="header" href="#union-a-or-b">Union, A or B</a></h2>
<img src="overlay/overlay_rules/union.svg" alt="Union" style="width:50%;">
<h2 id="intersection-a-and-b"><a class="header" href="#intersecti