| _SECTION_PARAMETERS_ | |
| activates the functional | |
| This optional keyword expects a logical | |
| This keyword behaves as a switch T . Default value: F | |
| FUNCTIONAL | |
| FUNCTIONAL LLP | |
| Which one of the KE_GGA functionals should be used | |
| This optional keyword expects a keyword. Default value: OL1 | |
| valid keywords: OL1, OL2, LLP, PW86, PW91, LC, T92, PBE |