Appendix: Nonstandard Extensions to Scheme

In this appendix we describe the nonstandard procedures and features of Scheme (i.e., those not in the R4RS Scheme Standard) which we presume in the text.
This is a portion of the annotated table of contents for the textbook Concrete Abstractions: An Introduction to Computer Science Using Scheme, by Max Hailperin, Barbara Kaiser, and Karl Knight. Free access to the full text in PDF form and supporting materials are also available.