PLOB! (Persistent Lisp OBjects!) code and doc: http://www.lisp.de/software/plob/Welcome.html Mockmma: a Common Lisp package and libraries that implement a symbolic math language compatible with Mathematica(tm) -- http://http.cs.berkeley.edu/~fateman/mma.mailer (a note on where to ftp the code from and how to use it) -- Dwight