# HDF5 User's Guide

A User's Guide for HDF5

Release 1.0
January 1999
Hierarchical Data Format (HDF) Group
National Center for Supercomputing Applications (NCSA)
University of Illinois at Urbana-Champaign (UIUC)

> A Note to the Reader: The primary HDF5 user documents are the online HTML documents distributed with the HDF5 code and binaries and found on the HDF5 website. Several users have expressed a desire for documents in an alternative format:
> - Some have requested a version that can be reasonably printed in a single print operation.
> - Others have requested an easily searchable version.
> This PDF file has been created expressly to meet these needs.

> The reader will note that each section of this document looks very much as the corresponding HTML page would look in a web browser. That is not accidental as the HTML version remains the HDF5 development team's primary documentation vehicle.