Using the script runfsm_lapw it is possible to constrain the
total magnetic moment per unit cell and thus force a particular
magnetic solution. This is particularly usefull for systems with
several metastable (non-) magnetic solutions, where a usual
calculation would not converge or the solution may depend on the
starting density. You have to create 2 files case.in2up and
case.in2dn and select in those files the number of electrons
(NE) for up- and down-spin in order to define the desired moment
of: