HDF is a multi-object file format that facilitates the transfer of various
types of scientific data between machines and operating systems.
HDF allows self-definitions of data content and easy extensibility for
future enhancements or compatibility with other standard formats.
HDF includes Fortran and C calling interfaces, and utilities to
prepare raw image of data files or for use with other NCSA software.

The HDF library contains interfaces for storing and retrieving compressed or
uncompressed 8-bit and 24=bit raster images with palettes,
n-Dimensional scientific datasets and binary tables. AN interface is also
included that allows arbitrary grouping of other HDF objects.