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<div class="section" id="customization-adding-simple-extensions">
<span id="sec-customizing"></span><h1>Customization: Adding Simple Extensions<a class="headerlink" href="#customization-adding-simple-extensions" title="Permalink to this headline">ΒΆ</a></h1>
<p><span class="sc">Psi4</span> has been designed to be easily extensible. There are several
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