anchor.diff:  c...  read error
   c
    30   continue
  +        close(kr)
           ierr=3
  -        close(kr)
  +        errstrng="scan_diff"
           return
   c
         end
   c
   c version
  -c $Id: scan_diff.f,v 1.1 2004/04/14 21:18:30 willic3 Exp $
  +c $Id: scan_diff.f,v 1.2 2004/07/12 19:47:26 willic3 Exp $
   c
   c Generated automatically by Fortran77Mill on Wed May 21 14:15:03 2003
   c
  
positive.code:       call pskip(kr)
   40   continue
          read(kr,*,end=10,err=30) n,idhist,(diforc(j),j=1,ndof)
          numdif=numdif+1
          go to 40
  c
  c...  normal return
  
negative.code: c         0:  No error
  c         1:  Error opening input file (no exception should be raised
  c             in this case since a differential force file is optional)
  c         3:  Read error
  c
        include "implicit.inc"
  c
  c...  parameter definitions
  c
        include "ndimens.inc"
        include "nconsts.inc"
  c
  c...  subroutine arguments
  c
        integer numslp,numdif,kr,ierr
        character difile*(*),errstrng*(*)
  c
  c...  local variables
  c
  