The files in 
     http://lie.math.okstate.edu://atlas/data
and subdirectories thereof are, for the most part, output files produced by
the Atlas (of Reductive Lie Groups) program, written and copyrighted by 
Fokko du Cloux, David Vogan, Marc van Leeuwen and Alfred Noel and licensed
via the GNU General Public License version 3. Full license information and 
source code are available for download from http://www.liegroups.org.

The data files themselves reside in subdirectories which are arranged in
a hierarchial fashion that mimics the natural taxonomy of the context in
which the correponding computations are carried out and the data file names
correspond to the atlas command that produced them. In the subdirectory 
00-HelpFiles one can find help files that describe the content and 
organization of the atlas data files.

Also included in this collection are data files obtained by analyzing further
the output of atlas computations. The files named wcellreps, which appear in 
directories corresponding to particular blocks of representations, describe the
structure of the cells of the block as Weyl group representations, the special
nilpotent orbit attached to the cell and the partitioning of the cell into 
subsets of representations that share the same primitive ideal. The files 
named PIsubcells describe the partitioning of the cells by primitive ideals 
explicitly.
 
For those interested in Kazhdan-Lusztig polynomials for complex groups (the
original setting of KL polynomial computations), the files named KLc1basis,
KLlcells, KLpolys, KLvdata, and KLwgraph may be useful. These files are 
contained in the subdirectories G where G is the Cartan type of a simple
Lie algebra of rank <= 8. Most of these files have a short header describing 
their contents. 

Also in the same subdirectories one can find data (computed via John 
Stembridge's Coxeter/Weyl Maple package) concerning the Green polynomials
of simple Lie algebras. This data appears in files names 
GreenPolynomials_G.txt and should be self-explanatory to anyone who has
read Shoji (Green Polynomials for F4, Green Polynomials for Classical Groups)
and Beynon-Spaltenstein (Green Polynomials for Finite Chevalley Groups of
Type E). 

Wherever applicable the data files in 
   http://lie.math.okstate.edu/atlas/data
are Copyright 2010-2011 Birne Binegar, but freely distributable as per the
Open Database License: 
   http://opendatacommons.org/licenses/odbl/1.0/. 
Any rights in individual contents of the database are licensed under 
the Database Contents License: http://opendatacommons.org/licenses/dbcl/1.0/