Introduction

The GNOME Desktop displays Help in the Yelp Help browser. The source documents for the Help are XML files. The XML files are written to the DocBook XML Version 4.1.2 document type definition (DTD). The DocBook XML files are converted to HTML, and the HTML is displayed in the Help browser. For more information on DocBook XML, see the following URL:

http://www.oasis-open.org/docbook/xml

The Help system uses Open Source Metadata Framework (OMF) files, and a cataloging system. The next sections describe OMF files and the cataloging system.