implementation 12 defined Behavior that must be documented by the implementation,and is allowed to vary among different compliant implementations.An implementation is allowed to define this behavior as unspecified. 45 COMMENT:All features that have implementation defined behavior are documented in Appendix D. Chapter 1 Introduction 13Chapter 1 Introduction 13 implementation defined Behavior that must be documented by the implementation, and is allowed to vary among different compliant implementations. An implementation is allowed to define this behavior as unspecified. COMMENT: All features that have implementation defined behavior are documented in Appendix D. 1 2 3 4 5