Preface; Part I. Language: Description of the language; 1. Overview of Scheme; 2. Requirement levels; 3. Numbers; 4. Lexical syntax and datum syntax; 5. Semantic concepts; 6. Entry format; 7. Libraries; 8. Top-level programs; 9. Primitive syntax; 10. Expansion process; 11. Base library; Appendices; Part II. Standard Libraries: 12. Unicode; 13. Bytevectors; 14. List utilities; 15. Sorting; 16. Control structures; 17. Records; 18. Exceptions and conditions; 19. I/O; 20. File system; 21. Command-line access and exit values; 22. Arithmetic; 23. syntax-case; 24. Hashtables; 25. Enumerations; 26. Composite library; 27. Eval; 28. Mutable pairs; 29. Mutable strings; 30. R5RS compatibility; Part III. Non-Normative Appendices: A. Standard-conformant mode; B. Optional case insensitivity; C. Use of square brackets; D. Scripts; E. Source code representation; F. Use of library versions; G. Unique library names; References; Alphabetic index of definitions of concepts, keywords, and procedures.