This document is divided into three parts.
Part 1 contains a summary of new and changed interfaces for z/OS® V2R1 and z/OS V1R13. It is divided into sections where each section is devoted to a specific z/OS element or feature. Within each section, information is presented in tables grouped by component (where applicable), by type of interface (for example, commands, environment variables), and by the release in which the interface was added or changed.
Part 2 contains a summary of new, changed, and deleted messages for each element in z/OS V2R1. Within each section, you find information about new, changed, and deleted messages.
Part 3 contains a summary of new, changed, and deleted messages for each element in z/OS V1R13. Within each section, you find information about new, changed, and deleted messages.
For purposes of this document, "interfaces" refer to software that allows a user to interact with and perform operations on a system, program, or device.
z/OS Summary of Message and Interface Changes is for anyone who needs to know which messages and interfaces are new and changed for z/OS V2R1 and z/OS V1R13.
This document references information in other documents, using shortened versions of the document title. For complete titles and order numbers of the documents for z/OS elements and features, see z/OS Information Roadmap.
This document does not contain information about new, changed, or deleted checks for IBM® Health Checker for z/OS. For check information, see IBM Health Checker for z/OS User's Guide. For currently available checks, see http://www.ibm.com/servers/eserver/zseries/zos/hchecker/check_table.html (IBM Health Checker for z/OS check table).