LREAL
LREAL = .TRUE. | .FALSE. | On (or O) | Auto (or A)
Default: LREAL = .FALSE.
Description: LREAL determines whether the projection operators are evaluated in real-space or in reciprocal space.
LREAL=.FALSE. : projection done in reciprocal space
LREAL=.TRUE. : projection done in real space, (old, superseded by LREAL=O)
LREAL=On or O : projection done in real space, projection operators are re-optimized
LREAL=Auto or A : projection done in real space, fully automatic optimization of projection operators (no user interference required)