Hi,

I know it is not possible to perofrm force field fitting with GULP for MEAM and REAX force fields, but is it possible to edit existing or add new MEAM or REAX forcefield parameters in GULP?  For example, the MEAM library file states some modifications should be made to include cross-terms, however I don't see how to edit or add new force field types for REAX or MEAM.

Thanks