anchor.diff:  
      ! This module contains routines with system-specific logic and references, including all references to the console unit, CU.
      ! It also contains standard (but not system-specific) routines it uses.
  -   ! SysGnu.f90 is specifically for the GNU Fortran (gfortran) compiler on Windows.
  +   ! SysGnuWin.f90 is specifically for the GNU Fortran (gfortran) compiler on Windows.
      ! It contains the following routines:
      !     FUNCTION    FileSize( Unit )                                         ! Returns the size (in bytes) of an open file.
      !     FUNCTION    Is_NaN( DblNum )                                         ! Please use IEEE_IS_NAN() instead
  
positive.code:    !     FUNCTION    NWTC_gamma( x )                                          ! Returns the gamma value of its argument.   
     !     SUBROUTINE  FlushOut ( Unit )
     !     SUBROUTINE  GET_CWD( DirName, Status )
     !     SUBROUTINE  OpenCon
     !     SUBROUTINE  OpenUnfInpBEFile ( Un, InFile, RecLen, Error )
     !     SUBROUTINE  ProgExit ( StatCode )
  
negative.code:    !     SUBROUTINE  WriteScr ( Str, Frm )
     !     SUBROUTINE LoadDynamicLib( DLL, ErrStat, ErrMsg )
     !     SUBROUTINE FreeDynamicLib( DLL, ErrStat, ErrMsg )
  
     USE NWTC_Base
  
     IMPLICIT NONE
  