rong>a2</strong> (<a class="reference external" href="https://docs.python.org/3/library/functions.html#float" title="(in Python v3.11)"><em>float</em></a><em>, </em><em>optional</em>) – The fractional coordinate to evaluate along a2vect_uvw.
Default value is 0.0.</p></li>
<li><p><strong>atomshift</strong> (<em>array-like object</em><em>, </em><em>optional</em>) – A Cartesian vector shift to apply to all atoms.  Can be used to shift
atoms perpendicular to the fault plane to allow different termination
pl