How to install XSECT software.

1. Put these 3 files into a specifed directory (I recommend putting them in c:\g_f) :

sears.ascii 
sears91.dat 
at_weights.dat

2. Define the environment variable %g_f% to stand for the directory where you put these 3 files. 
One way to do this is to add the following line to c:\autoexec.bat 
(if this file does not exist, then you can create it yourself):

set g_f=c:\g_f\

3. Put xsect.exe wherever you like. When you run it the datafiles should now be found 
without difficulty.

Notes
-----
25-3-07  : In older versions of xsect the calculation of Faber-Ziman coefficients was correct
but recently it had become incorrect. This error is now corrected. Faber-Ziman coefficients
are now calculated correctly.

