--- /dev/null
+ integer nres,nres0,nsup,nstart_sup,nend_sup,nstart_seq,ishift_pdb
+ double precision c,cref,dc,xloc,xrot,dc_norm,t,r,prod,rt
+ common /chain/ c(3,maxres2+2),dc(3,maxres2),xloc(3,maxres),
+ & xrot(3,maxres),dc_norm(3,maxres2),nres,nres0
+ common /rotmat/ t(3,3,maxres),r(3,3,maxres),prod(3,3,maxres),
+ & rt(3,3,maxres)
+ common /refstruct/ cref(3,maxres2+2),nsup,nstart_sup,nend_sup,
+ & nstart_seq,ishift_pdb