| Keylist | Parms? | Keylist Description | Page |
| $CHOOSE | Yes | Specify alternative Lewis Structure for NBO search | B-14 |
| $CORE | Yes | Modify default NBO core table | B-12 |
| $DEL | Yes | Delete selected NBOs, interactions, or blocks of interactions | B-16 |
| $NRTSTR | Yes | Specify reference structures for NRT analysis | B-77 |