Dn     Enter thickness of nth chemical layer.

 DMn    Enter thickness of nth magnetic layer

 MUn    Enter the length absorption coefficient for chemical layer n.

 QCn    Enter nuclear (or x-ray) critical Q squared of chemical layer n.

 QMn    Enter magnetic critical Q squared of magnetic layer n.

 RMn    Enter interfacial roughness at top of magnetic layer n.

 ROn    Enter interfacial roughness at top of chemical layer n.

 THn    Enter the angle (in degrees) in the plane for the moment in
        magnetic layer n.  A value of 0 corresponds to the incident beam
        direction.