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Parameter Default Value Description
ICHAIN 0 Indicates which method to run. NEB (ICHAIN=0) is the default
IMAGES  Number of images in the band, excluding endpoints
SPRING -5.0 eV/A2 Spring force between images; negative value turns on nudging
LCLIMB .TRUE. Flag to turn on the climbing image algorithm
LTANGENTOLD .FALSE. Flag to turn on the old central difference tangent
LDNEB .FALSE. Flag to turn on modified doubble nudging

NEBCELL* .FALSE. Flag to turn on NEB for changing cell. Used with ISIF=3
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

* not yet availble for public use
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