:term:`LOCAL_WEAKP <LOCAL_WEAKP (CIS)>`
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      Desired treatment of "weak pairs" in the local-CIS method. A value of ``NEGLECT`` ignores weak pairs entirely. A value of ``NONE`` treats weak pairs in the same manner as strong pairs. A value of MP2 uses second-order perturbation theory to correct the local-CIS energy computed with weak pairs ignored.

      * **Type**: string
      * **Possible Values**: MP2, NEGLECT, NONE
      * **Default**: MP2