C Store the geometric variables in the following COMMON block.
      integer ntheta,nphi,nside,nvar,Origin,nstore,ialph,ivar
      double precision theta,phi,alph,omeg,varsave,esave
      common /var/ theta(maxres),phi(maxres),alph(maxres),omeg(maxres),
     &          ialph(maxres,2),ivar(4*maxres2),ntheta,nphi,nside,nvar
C Store the angles and variables corresponding to old conformations (for use
C in MCM).
      common /oldgeo/ varsave(maxvar,maxsave),esave(maxsave),
     &  Origin(maxsave),nstore