 sets S_x2c = S and X_x2c = X for large deviations from I. Also, builds the approximate Hamilronian H**new if required. Default yes.</li><br>
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<a name=eri3_nbatch><li>                 <span style="display:inline-block;background:#EEEEEE;width:400px">               <b>eri3_nbatch</b>  </span>  
<br><br>
<i>Optional</i><br>
Default: 1<br><br>
Sets the number of batches when calculating the 3-center integrals. Having a large eri3_nbatch reduces the memory foot print, however it may lower the performance.</