Although Learning XML covers XML broader, it still presents the key elements of the technology with enough detail to familiarize the reader with an important markup language. To illustrate the real-world XML application, he gives the reader a look at a document written in DocBook - XML document type public to publish technical writings - and explains part of the document step by step. Ray also goes deep into some discussion of programming XML utilities with Perl. Learning XML is a very readable introduction to XML for readers with knowledge of existing markup and Web technologies. Plain Topics covered: XML description XHTML XLink XPointer Presentation with Cascading Style Sheets (CSS) Document Type Definition (DTD), XML Schemas XSLT Transformation with Internationalization Simple API for XML (SAX)