Other components
===================

SnapPy incorporates:

* The `ptolemy module <http://www.unhyperbolic.org/ptolemy.html>`_ for
  studying representations of 3-manifold groups into pSL(*N*, **C**)
  and now also PGL(3, **C**).  By `Matthias Goerner
  <http://www.unhyperbolic.org/>`_.


* `Twister <http://bitbucket.org//Mark_Bell/twister/>`_ for building
  surface bundles and Heegaard splittings from mapping class group
  data; here's the `user guide
  <http://bitbucket.org//Mark_Bell/twister/raw/tip/docs/Twister.pdf>`_.
  By Marc Bell, Tracy Hall, and Saul Schleimer.
	
