You will need to change some items in the Makefile to get the programs
to compile.  HDFHOME is one, and you may need to change the compiler to
something else if you don't have gcc.  

Typing, 'mag_fft_rd magtestdata' will run the telltale reading
program on the Level1 data set that has been included.

The programs to read the data are:
mag_fft_rd, mag_hskp_rd, mag_snap_rd, mag_vec_rd
and are run just like the example above.

Hopefully the read programs are simple enough that you can modify them 
to process the data in whatever fashion you choose.  The structures are 
defined in the .h files and is what all the HDF data IO is based on.  If
there is something that you don't like about the structures let us know.

If you don't use gmake (the GNU version of make) this makefile will not 
work for you.  The shorthand values $^ and $< mean 'all the dependency 
items' and 'the first listed dependency item' respectively.  The value
$@ is equivalent to the object to be made.

In gmake:
test: test.o test2.o

$@ = test
$^ = test.o test2.o
$< = test.o
