Introduction to the eXtensible Markup Language

If you've been online or to a bookstore recently, you know that XML is everywhere. What is XML? Why is XML so important? Is XML something I should learn and use? Let's see if I can answer these questions for you in this Appendix. I will provide an introduction to the eXtensible Markup Language (XML) and discuss all the basics of the language. This Appendix should provide a beginner with enough information to get started with this important language and to work through the concepts in this book.