[Ifeffit] 4+2 model for distortion

hi all How to include this model in atom that is 4+2 or 2+4 for 2short or 4 long bond length of octahedra thanks *A. Ahad* *--------------------* *Abdul Ahad* Junior Research Fellow *Dept of Physics* *Aligarh Muslim University* *Aligarh 202002 (U.P.), India* *http://www.researcherid.com/rid/G-8198-2018 http://www.researcherid.com/rid/G-8198-2018* *Email: a_ahad.rs@amu.ac.in , ahad@mailaps.org *