As xasy is written in the interactive scripting language
Python/TK, it requires Python
(http://www.python.org), the Python Imaging Library
(http://www.pythonware.com/products/pil/), and the tkinter
package (included with Python under Microsoft Windows) be
installed. Fedora Linux users can either install
tkinter with the commands
yum install tkinter yum install tk-devel
or manually install the tkinter, tix, tk,
and tk-devel packages.
Pictures are deconstructed into the PNG image format, which
supports full alpha channel transparency. Under Microsoft Windows,
this requires Python 2.7.4 or later and version 3.1.0 of the
Pillow fork of the Python Imaging Library, available from