anes to be cut.  Cannot be given with shiftindex.</p></li>
<li><p><strong>shiftindex</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#int" title="(in Python v3.11)"><em>int</em></a><em>, </em><em>optional</em>) – Allows for selection of different termination planes based on the
preferred shift values determined by the underlying fault generation.
Cannot be given with atomshift. If neither atomshift nor shiftindex
given, then shiftindex will be set to 0.</p></l