# Xtango 1.52 Copyright 1990-1994 Georgia Institute of Technology
# 			     (by John T. Stasko and Doug Hayes).
# WINTERP 2.0 Copyright (C) 1994, Enterprise Integration Technologies Corp. and Niels Mayer.
# WINTERP 1.15-1.99, Copyright (c) 1993, Niels P. Mayer.
# WINTERP 1.0-1.14, Copyright (c) 1989-1992 Hewlett-Packard Co. and Niels Mayer.
# 
# This version of Xtango 1.52 (varargs version) represents a subset of
# the Xtango distribution that has been modified specifically for use with
# WINTERP. Non-WINTERP uses of Xtango should use the complete, standard
# version of Xtango, which is available under separate copyright via
# anonymous ftp from par.cc.gatech.edu:pub/xtangovarargs.tar.Z and
# par.cc.gatech.edu:pub/xtango.tar.Z.
# 
# Permission to use, copy, modify, distribute, and sell this software and its
# documentation for any purpose is hereby granted without fee, provided that
# the above copyright notice appear in all copies and that both that
# copyright notice and this permission notice appear in supporting
# documentation, and that the name of Georgia Institute of Technology, 
# John T. Stasko, Doug Hayes, Enterprise Integration Technologies, 
# Hewlett-Packard Company, or Niels Mayer not be used in advertising or
# publicity pertaining to distribution of the software without specific,
# written prior permission. Georgia Institute of Technology, John T. Stasko,
# Doug Hayes, Enterprise Integration Technologies, Hewlett-Packard Company,
# and Niels Mayer makes no representations about the suitability of this 
# software for any purpose.  It is provided "as is" without express or
# implied warranty.
# 
# GEORGIA INSTITUTE OF TECHNOLOGY, JOHN T. STASKO, DOUG HAYES, ENTERPRISE
# INTEGRATION TECHNOLOGIES, HEWLETT-PACKARD COMPANY AND NIELS MAYER
# DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE, INCLUDING ALL IMPLIED
# WARRANTIES OF MERCHANTABILITY AND FITNESS, IN NO EVENT SHALL GEORGIA
# INSTITUTE OF TECHNOLOGY, JOHN T. STASKO, DOUG HAYES, ENTERPRISE INTEGRATION
# TECHNOLOGIES, HEWLETT-PACKARD COMPANY OR NIELS MAYER BE LIABLE
# FOR ANY SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
# RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF
# CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.

NPM: The following text appears as xtango/CHANGES within the xtango 1.52
NPM: distribution from par.cc.gatech.edu:pub/xtangovarargs.tar.Z
NPM: (130.207.119.254).

Changes in developing:

version 1.40
------------
* Fixed bug in copying text images
* Fixed bug in calculating image locs for text when window is zoomed
* Modified TANGOloc_equal to be a little more generous
* Added new ASSOCdelete routine
* Added new TAP high-level transition macro package
* Added new transition type ZOOM
* Added TANGOset_coord and TANGOinq_coord which provide generic
  animation controlled zooming and panning capabilities
* Panning works a little better
* Added little error padding to TANGOinput_image (you can now pick
  vertical and horizontal lines)
* Added lots of new example animations

version 1.41
------------
* Fixed some panning and zooming problems
* Added new animations

version 1.42
------------
* Fixed bug in copying composite Images
* Increased maximum number of colors to 50
* Added new animations

version 1.43
------------
* Fixed bug in drawing centered text
* Fixed bug in copying polygon, polyline and spline Images
* Supports more colors active at once
* Added window background color capability
* Added new animations
* Added Animator front-end interpreter

version 1.50
------------
* Changed the way animation is done with X to markedly 
  improve animation speed

version 1.51
------------
* Fixed "dropppings" bugs in new animation methodology
* Fixed bug in drawing bitmap images
* Fixed memory leak in splines
* Fixed up input_coord and input_image routines
* Fixed ZOOM transition
* Cleaned up internal code a lot
  (Many thanks to Niels Mayer for these fixes)

version 1.52
------------
* Improved text positioning and drawing
* Improved animation bound box calculations
  (Many thanks to Niels Mayer for these fixes)
* Fixed bug in panning or zooming while paused
* Added a group of new animations
  

possible future developments
----------------------------
* Rewind capability
* Step mode
* Dialog boxes and buttons
* Constraints
