The program XABS2 is described in a Journal of Applied Crystallography
paper entitled "XABS2:  An empirical absorption correction program" 
by Sean Parkin, Bahman Moezzi and Hakon Hope.  J. Appl. Cryst. 28,
pp53-56

If you get any of the files from this anonymous ftp server, you are 
required to leave your name and address in the directory 
"your_registration".  You can do this by simply making a file with
any old text editor and uploading it with "put" rather than "get".

An acceptable reference to use in publications in which the xabs2 code
was used is:

Parkin, S., Moezzi, B. and Hope H.  J. Appl. Cryst. (1995). 28, 53-56

or something similar.  

You are free to use the code for whatever purpose you want, provided
the appropriate reference is made to the above work, and provided that
you do not copy any of it without first contacting the first author.

CHANGE HISTORY (after general release in january of 1995):
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You need to remove the top few lines of CIF style gibberish
from the top of the *.FCF file, and the CELL line in the *.RES file must
be in the format specified in the program.  I may amend the program to
get by these (possible) sources of confusion.

Sean Parkin 95-02-28
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------------------------------------------------------------------------
The program now automatically skips the junk at the top of *.FCF files
and it reads the CELL line from *.RES files in free format.  But the PC
executables DO NOT DO THIS FOR YOU.  This is because I do not have easy
access to a decent PC FORTRAN compiler.  I will alter the PC executables
if and/or when I can.

Sean Parkin 95-03-01
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------------------------------------------------------------------------
You can choose whether to do a linear, quadratic or cubic fit.  Cubic is
better for Cu Ka radiation with data to 2theta > 90 degrees.  Linear is
better for Mo Ka or Cu data that has a restricted resolution, such as in
macromolecular crystallography.

Sean Parkin 95-08-08
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