This directory contains all software pertaining to 
HDF (Hierarchical Data Format).

List of directories and what they contain:

    HDF/             - HDF 4.x and previous software
      HDF_Current/   - latest release
      prev-releases/ - old releases

    HDF5             - HDF5 software/
      current/       - latest release
      prev-releases/ - old releases

    lib-external/    - External libraries used by HDF / HDF5
                       (zlib, szip, jpeg)   
   
    newsletters/     - Text versions of newsletters