The first is addto.lisp, which contains a function to add a number to all the numbers in a tree.
The first is set.lisp, which contains some functions for set operations. You can load it into scheme with the command:
scheme -load set.lisp.
Also available is a document in LaTeX and postscript.
Please report any problems found in these pages to: CS 3304 EI Account (cs3304sm@ei.cs.vt.edu)