DOF_MAG_MAG2
dof->dofh_ident[DOF_ID_MAG2] = DOF_MAG_MAG2;
dof->dofh_ident[DOF_ID_MAG2] != DOF_MAG_MAG2 ||
hp->dofh_ident[DOF_ID_MAG2] = DOF_MAG_MAG2;