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/ This is the examples of ABACUS program.
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This example contains the method to optimize the atom positions using 
numerical local basis 

Note:

(1)Structure relaxation calculation is used if "calculation	relax". 


(2)Use Conjugate Gradient (CG) algorithm to optimize the atom positions.
"relax_method	cg"(default value)


(3)'nsep': number of ion iteration steps
'force_thr_ev': force threshold, unit: eV/Angstrom 

(4)Output file OUT.ABACUS/STRU_NOW.cif contains the optimized atom positions.

