bresenham.py and fly.py are Emily Gunawan's python programs that do NOT require the syzygy libraries as do the other rticas in pycube. The "graph-paper" was corrected here. PyLorenz.py (and the two in quarantine) are Stan Blank's rticas which do NOT need neither Tkinter, nor the syzygy bindings. These work directly with the opengl bindings for python. However, the two items in quarantine require the package: psyco which are not on the u00 system yet. Commenting out the the two references to psyco has strange, illogical effects. See their readme. 24mar05 The Python+OpenGL versions of the illiLessons are accumulating here. 12apr05 oc1.py is in python+GLUT with a C-like structure, including globals. oc1-pb.py is the same program encapsulated to clean up the globals. tr1.py is in python+GLUT and tr1-gf.py is the same but encapsulated into a class. octa.py is a 3x3 array of octahedra written by Peter Brinkmann using his PyTree module for programming the Szyzygy Distributed Scenegraph Mechanism.