x3270 Lineage

Here is the official copyright notice for x3270 3.0.x: 

 Copyright 1989 by Georgia Tech Research Corporation, Atlanta, GA
 30332.
 All Rights Reserved. GTRC hereby grants public use of this software.
 Derivative works based on this software must incorporate this
 copyright notice. 

 X11 Port Copyright 1990 by Jeff Sparkes.
 Additional X11 Modifications Copyright 1993, 1994, 1995 by Paul Mattes.
 Permission to use, copy, modify, and distribute this software and its
 documentation for any purpose and without fee is hereby granted,
 provided that the above copyright notice appear in all copies and that
 both that copyright notice and this permission notice appear in
 supporting documentation. 

For the Georgia Tech fonts (the fonts with the name "gt" in them), there is a
slightly different notice: 

 Copyright 1990 by the Georgia Institute of Technology.
 All rights reserved except for those rights explicitly mentioned below.
 Permission is granted to distribute freely or to modify and distribute
 freely any materials and information contained herein as long as the
 above copyright and all terms associated with it remain intact. 

 Modifications Copyright 1994 by Paul Mattes.
 Permission to use, copy, modify, and distribute this software and its
 documentation for any purpose and without fee is hereby granted,
 provided that the above copyright notice appear in all copies and that
 both that copyright notice and this permission notice appear in
 supporting documentation. 

What this means is that you (whomever you may be) may use x3270 3.0 for
whatever purpose you desire except selling it, and the only restriction is that
you include the above notices in each copy or derivative work you
distribute. 

x3270 3.0.x comes from several sources: 

                                   3270tool
                                      |
                                      V
                                   x3270 1.2
                                      |
              +-----------------------+------------------------+
              |                       |                        |
              V                       V                        V
 x3270 1.2-cutpaste-iso8859-1     x3270 2.65               x3270 3.0.x
                                                               |
                                                               V
                                                         [you are here]

The original work was 3270tool, a 3270 emulator for Suntools (Sun's
original proprietary windowing environment). This was developed by
Robert Viduya at Georgia Tech, and is why GTRC's copyright notice is
first. 

3270tool was then ported to X11R4 by Jeff Sparkes, and given the name
"x3270." This is why his name is second. 

x3270 3.0 started with Jeff's x3270 version 1.2, and was made very much
bigger by Paul Mattes, with contributions and suggestions by a number of
users from the net. This is the version you are looking at right now. 

Given the spirit of creativity on the net (and the availability of source code)
there are a number of other versions of x3270, all based on Jeff's code, most
notably v1.2-cutpaste-iso8859-1 and v2.65. x3270 3.0 is a separate line of
development from these other versions. Patches for those versions do not
apply to x3270 3.0.x, and some of the features found in those versions may
not be in 3.0.x. X resource definitions are generally not compatible, either. 
