:term:`FRAG_MODE <FRAG_MODE (OPTKING)>`
"""""""""""""""""""""""""""""""""""""""

      For multi-fragment molecules, treat as single bonded molecule or via interfragment coordinates. A primary difference is that in ``MULTI`` mode, the interfragment coordinates are not redundant.

      * **Type**: string
      * **Possible Values**: SINGLE, MULTI
      * **Default**: SINGLE