Contents of this chapter:
2.1. C-CODE
2.2. CHANGE
2.3. CHANGES
2.4. CHAPTER
2.5. CHG-CHAPTER
2.6. CHG-CLASS
2.7. CHG-CONCLUSION
2.8. CHG-EFFORT
2.9. CHG-IMPLEMENTATION
2.10. CHG-IMPLEMENTATIONS
2.11. CHG-KEYWORDS
2.12. CHG-OBJECT
2.13. CHG-OBJECT-REVISION
2.14. CHG-OBJECT-REVISION-REF
2.15. CHG-OBJECT-REVISIONS
2.16. CHG-OBJECTS
2.17. CHG-PRIORITY
2.18. CHG-PROPOSED-BY
2.19. CHG-REASON
2.20. CHG-RELATED-OBJECTS