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Installation and usage of the Scyther tool
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Requirements
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To be able to use Scyther, you need the following three things:


1. The GraphViz library.

  This library is used by the Scyther tool to draw graphs. It can be
  freely downloaded from:

	http://www.graphviz.org/

  Download the latest stable release and install it.



The graphical user interface of Scyther is written in the Python
language. Therefore, the GUI requires the following two items:


2. Python 

  Stable releases of the Python interpreter are available from:

  	http://www.python.org/download/

  Scyther does not support Python 3. You are therefore recommended to
  choose the latest production release of Python 2, e.g., Python 2.7.


3. wxPython libraries.

  The GUI user interface uses the wxPython libraries.

	http://www.wxpython.org/download.php

  There are many different wxPython packages. You should choose a 32-bit
  package that matches your Python version (e.g., 2.7). It is
  recommended to select the unicode version from the stable releases.

  As of writing (May 2013) the following links lead to the appropriate
  wxPython packages for Python 2.7:

  Windows:
  	http://downloads.sourceforge.net/wxpython/wxPython2.8-win32-unicode-2.8.12.1-py27.exe

  Mac OS X:
  	http://downloads.sourceforge.net/wxpython/wxPython2.8-osx-unicode-2.8.12.1-universal-py2.7.dmg

  Ubuntu/Debian Linux:
  	http://wiki.wxpython.org/InstallingOnUbuntuOrDebian


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Running Scyther
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Start Scyther by executing the file

  	scyther-gui.py

in the directory where you found this file.