Preface This guide describes how customers can take advantage of the OpenVMS Galaxy capabilities available in OpenVMS Alpha Version 7.2. The information in this document applies to OpenVMS Alpha systems only; it does not apply to OpenVMS VAX systems. Intended Audience This guide is intended for system managers, application programmers, technical consultants, data center managers, and anyone else who wants to learn about the Galaxy Software Architecture on OpenVMS. Document Structure Specific topics include: basic OpenVMS Galaxy concepts, hardware and software requirements, configuration alternatives, installing and licensing information, system management options, and available application programming interfaces (APIs) for developing programs for OpenVMS Galaxy systems. To be supplied: Chapter descriptions How to Use this Book To be supplied: Add a road map of the book. This book introduces OpenVMS Galaxy features and explains how to use the OpenVMS Galaxy features available in OpenVMS Alpha Version 7.2-EFT3. It includes step-by-step procedures for configuring, managing, and using OpenVMS Galaxy technology as well as APIs for developing programs to take advantage of the new OpenVMS Galaxy features. Related Documents For additional information about the Open Systems Software Group (OSSG) products and services, access the OpenVMS World Wide Web site at the following address: http://www.openvms.digital.com Reader's Comments Compaq welcomes your comments on this manual. Print or edit the online form SYS$HELP:OPENVMSDOC_ COMMENTS.TXT and send us your comments by: Internet openvmsdoc@zko.mts.dec.com Fax 603 884-0120, Attention: OSSG Documentation, ZKO3- 4/U08 Mail Compaq Computer Corporation OSSG Documentation Group, ZKO3-4/U08 110 Spit Brook Rd. Nashua, NH 03062-2698 How To Order Additional Documentation Use the following World Wide Web address to order addi- tional documentation: http://www.openvms.digital.com:81/ If you need help deciding which documentation best meets your needs, call 800-DIGITAL (800-344-4825). Conventions In this manual: * Instance refers to a copy of the OpenVMS Alpha oper- ating system. * OpenVMS Galaxy and Galaxy refer to the Compaq Galaxy Software Architecture on OpenVMS. * DECwindows and DECwindows Motif refer to DECwindows Motif for OpenVMS software. The following conventions are used in this manual: Ctrlx A sequence such as Ctrlx indicates that you must hold down the key labeled Ctrl while you press another key or a pointing device button. PF1 x A sequence such as PF1 x indicates that you must first press and release the key labeled PF1 and then press and release another key or a pointing device button. Return In examples, a key name enclosed in a box indicates that you press a key on the keyboard. (In text, a key name is not enclosed in a box.) In the HTML version of this document, this convention appears as brackets, rather than a box. . . . A horizontal ellipsis in examples indicates one of the following possibilities: * Additional optional arguments in a statement have been omitted. * The preceding item or items can be repeated one or more times. * Additional parameters, values, or other information can be entered. . A vertical ellipsis indicates the omission of . items from a code example or command for- . mat; the items are omitted because they are not important to the topic being discussed. ( ) In command format descriptions, parentheses indicate that you must enclose the options in parentheses if you choose more than one. [ ] In command format descriptions, brackets indicate optional elements. You can choose one, none, or all of the options. (Brackets are not optional, however, in the syntax of a directory name in an OpenVMS file specification or in the syntax of a substring specification in an assignment statement.) [ | ] In command format descriptions, vertical bars separating items inside brackets indicate that you choose one, none, or more than one of the options. { } In command format descriptions, braces in- dicate required elements; you must choose one of the options listed. bold text This text style represents the introduction of a new term or the name of an argument, an attribute, or a reason. In the HTML version of this document, this convention appears asitalic te.t italic text Italic text indicates important information, complete titles of manuals, or variables. Variables include information that varies in system output (Internal erronumber ), in command lines (/PRODUCER= name ), and in command parameters in text (where dd represents the predefined code for the device type). UPPERCASE TEXT Uppercase text indicates a command, the name of a routine, the name of a file, or the abbreviation for a system privilege. Monospace text indicates code examples and interactive screen displays. Monospace type In the C programming language, monospace type in text identifies the following elements: keywords, the names of independently com- piled external functions and files, syntax summaries, and references to variables or identifiers introduced in an example. - A hyphen at the end of a command for- mat description, command line, or code line indicates that the command or statement continues on the following line. numbers All numbers in text are assumed to be dec- imal unless otherwise noted. Nondecimal radixes-binary, octal, or hexadecimal-are explicitly indicated.