anchor.diff:    end do
   
     ldmpaper            = .false.
  -  aperunit            = 0
  +  aperunit            = -1
     aper_filename(1:16) = ' '
     ldmpaperMem         = .false.
     loadunit            = 3 ! default: read aperture markers in fort.3
  
positive.code:   use crcoall
    use string_tools
    use mod_common
    use mod_units, only: f_open, f_close
  
    implicit none
  
  
negative.code: !  END APERTURE LIMITATIONS PARSING
  ! ================================================================================================ !
  
  ! ================================================================================================================================ !
  !  Begin Checkpoint Restart
  ! ================================================================================================================================ !
  