A second example the ethane crystal

This input was used in checking our crystal version and is the standard for this purpose in the present development phase. 

All interactions, one torsion per bond, L-J functions with A and B, one molecule , save coordinates, read parameters from the following lines. 

Lattice constarats note constraint gamma position unit on next. 

This line has no influence, as there are no atoms on the site symmetry element. 

Site symmetry operation generates four atoms. 

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