1-5 Constraint type number (NTYPE=4) 6-10 Contactor system number (ISYSTM) 11-15 Rotational direction flag (IROT ) EQ. 0, normal to both fiber directions EQ. 1, given in the real constant card 16-20 Rotational tie flag (IPL ) EQ. 0, Elastic EQ. 1, Plastic EQ. 11, Plastic, K=K1 all times EQ. 2, Rigid