This document is the result of a great deal of hard work by a great many people. Without Erik Fortune’s work as Architect of the X Keyboard Extension and the longtime support of Silicon Graphics Inc. there would not be a keyboard extension. We gratefully thank Will Walker and George Sachs for their help and expertise in providing some of the content for this document, and Digital Equipment Corporation and Hewlett-Packard for allowing them to participate in this project, and we are deeply indebted to IBM for providing the funding to complete this library specification. Most of all, we thank Gary Aitken and Amber J. Benson for their long hours and late nights as ultimate authors of this specification, and for serving as authors, document editors, and XKB protocol and implementation reviewers. Their commitment to accuracy and completeness, their attention to detail, their keen insight, and their good natures when working under tremendous pressure are in some measure responsible not only for the quality of this document, but for the quality of the Keyboard extension itself. Matt Landau Manager, X Window System X Consortium Inc. This document is made available to you in modern formats such as HTML and PDF thanks to the efforts of Matt Dew, who converted the original troff sources to DocBook/XML and edited them into shape; Fernando Carrijo, who converted the images to SVG format; Gaetan Nadon, who set up the formatting machinery in the libX11 builds and performed further editing of the DocBook markup; and Alan Coopersmith, who converted the DocBook tags to semantic markup and cleaned up other formatting issues.