$ SRC513=/ubc/cs/home/m/mrg/public_html/cs513/2012-2/src
    $ export JYTHONPATH=$SRC513/sym.jar:$SRC513/javabdd-1.0b2.jar
    $ jython
	should get you running on a CS department machine.
	For other machines, download the two jar files and set
	your JYTHONPATH variable accordingly