Other components =================== SnapPy incorporates: Ptolemy module -------------- The `ptolemy module `_ for studying representations of 3-manifold groups into SL(*N*, **C**) and PSL(*N*, **C**). By `Matthias Goerner `_. .. toctree:: :maxdepth: 3 ptolemy Twister ------- `Twister `_ for building surface bundles and Heegaard splittings from mapping class group data. By Marc Bell, Tracy Hall, and Saul Schleimer.