| Chapter 1 | Describes key new features, enhancements, and improvements delivered in Version 5.1B-4 |
| Chapter 2 | Provides information you need to be aware of before you install or remove this kit. |
| Chapter 3 “Tru64 UNIX Patches” | Provides information about the Tru64 UNIX patches included in this kit. |
| Chapter 4 “TruCluster Server Patches” | Provides information about the TruCluster Server software patches included in this kit. |
| Chapter 5 “Worldwide Language Support Patches” | Provides information about the patches for the Worldwide Language Support subset included in this kit. |
| Chapter 6 “CSPs Included in This Kit” | Lists the customer-specific patches (CSPs) for Tru64 UNIX and TruCluster Server that have been superseded by patches included in this kit. |
| Appendix A | Provides information about setting up and configuring an Enhanced Distance Cluster. |
| Appendix B “Prior Patch Installation Changes” | Provides a brief overview of important changes made to the patch kit installation process introduced in previous patch kits. |
| Appendix C “Component Licensing” | Provides the licenses for software components included in the Tru64 UNIX Version 5.1B-4 kit. |