= Python Packages Required in GSAS-II =
GSAS-II requires a number of packages that are not formally distributed as a part of Python:
* [http://www.wxpython.org/ WxPython]
* [http://matplotlib.sourceforge.net/ matplotlib]
* [http://numpy.scipy.org/ NumPy]
* [http://www.scipy.org/ SciPy]
* [http://pyopengl.sourceforge.net/ PyOpenGL]
At present, if any of these packages are not present in the version of Python used to start GSAS-II, the program will fail.