This is the CDF V3.9.1 software distribution for Windows 
XP/Vista/7/8/10/11 systems.  This binary packages are built from
both MS Visual Studio .Net VC++ 2022 (V19.0) compilers for both 32-bit and 
64-bit modes. 

This directory contains the following files:

AAREADME-391.txt This is the readme text file you're viewing. 

CHANGES.txt     This file describes the changes made for current and previous
                releases.

Release.notes	This file describes the changes for CDF V3.9.1.

CDF_copyright.txt      Information about the CDF copyright.

cdf3.9.1_[32|64]bit_MS_Installer.msi 
                This signed Microsoft self-installation file contains everything
                CDF offers, except for the CDF Perl APIs. It includes the
                followings:

                   - CDF core library and MS Foundation Class-based tools
                   - CDF C, FORTRAN, and Java APIs 
                   - Cygwin-based as well as Java version of the CDF tools
                   - CDF XML tools
                   - CDF Json tools
                This is either in 32-bit or 64-bit mode version of the
                distribution. The package, by default, will be installed into
                c:\program files\cdf_distribution\cdf39_1-dist for 64-bit, and
                c:\program files (x86)\cdf_distribution\cdf39_1-dist for 32-bit.
                Users need to have the permission to install the package there.
                Users can change the installed directory to a location that
                requires no higher privilege to do so.
                Note: 
                 1. The distributed conversion tool programs between netCDF 
                    and CDF might not be the latest. Please check out the
                    latest ones in
                    https://spdf.gsfc.nasa.gov/pub/software/cdf/conversion_tools/binary/latest_version
                 2. There are scripts (setenv.bat and setenv.ps1) to set up proper 
                    environment variables to run the command-line CDF tools 
                    and other Java-based applications on Command Terminal or
                    Windows Terminal that fully supports UTF-8. Users can 
                    manually place these environment variables into the 
                    Windows system properties (run terminal command: sysdm.cpl
                    from a command window and select "Advanced" and 
                    "Environment variables", and manually add/change the 
                    variables).

cdf3.9.1_[32|64]bit_WinZip_Installer.zip
                This WinZip version contains everything as in the Microsoft
                installer for CDF. Refer to Note 2 in the MS installer.

cdf3.9.1_[32|64]bit_WinZip_Installer.exe 
                This is a WinZip-based installer. It works just like the .zip
                file, except it has set the default directory that it will 
                install the files into. Refer to Note 2 in the MS installer. 

csharp-cdf3.9.1-[32|64]bit_WinZip_Installer.zip
                This WinZip version contains everything for Csharp-CDF APIs.

csharp-cdf3.9.1-[32|64]bit_WinZip_Installer.exe
                This WinZip self-installer for Csharp-CDF APIs. It works just
                like the .zip file, except it has set the default directory
                that it will install the files into.

PerlCDF3.9.1-[32|64]bit_Winzip_Installer.exe
                This WinZip self-installer contains everything for the Perl-CDF
                APIs.

src_distribution
                This file directs you to the source code for the CDF V3.9.1.

PerlCDF39_1.tar.gz
                This compressed tarbal contains the source code of 
                Perl-CDF APIs. You need to install the CDF library prior to
                building and using the Perl APIs.

cdfjava.jar     This is the latest version of cdfjava.jar that
                contains the latest Java APIs.  This file is also
                included in the installers. It is for those who had already
                installed an older version of Java APIs.

                If you are not sure whether you have the latest version of the
                Java APIs, download this file and replace the one you have in
                the <cdf39_1_dir>\lib directory.

cdfml.jar       This file contains the latest version of the CDF XML
                utilities (written in Java). This file is also included
                in the installers. It is for those who had already installed
                an older version of CDFML APIs.

                If you are not sure whether you have the latest version of the
                CDF XML tools, download this file and replace the one you have
                in the <cdf39_1_dir>\cdfml directory.

cdf39_documentation  This file points to the documentation of CDF V3.9.

checkleapseconds.bat Batch-script to check if the installed leap seconds
                     table is the latest.