Conventions Used

There are several conventions that I use in this book that you should be aware of. The most important one is that when I add new sections of code, I'll mark them with gray highlighting to point out the actual lines I'm discussing so that they stand out. (This sample is written in one of the languages built on XML, the Wireless Markup Language (WML), which is targeted at "micro-browsers" in cellular phones and personal digital assistants, or PDAs.)

 <?xml version="1.0"?>  <!DOCTYPE wml PUBLIC "-//WAPFORUM//DTD WML 1.1//EN" "http://www.wapforum.org/DTD/wml_1.1.  xml"> <wml>     <card id="Card1" title="First WML Example">         <!-- This is a comment -->  <p>   Greetings from WML.   </p>  </card> </wml> 

Also, where there's something worth noting or some additional information that adds something to the discussion, I'll add a sidebar:

More on SOAP

With a common name like SOAP, it's hard to search the Internet for more information about the Simple Object Access Protocol unless you're really into pages on personal cleanliness and daytime television. For more information, you might check out this starter list: http://msdn.microsoft.com/xml/general/soapspec.asp, www.oasis- open .org/cover/soap.html, www.develop.com/soap/, and www.develop.com/soap/soapfaq.xml.

Well, we're ready to go. If you have comments, I encourage you to write to me, care of New Riders. This book is designed to be the new standard in XML coverage, truly more complete and more accessible than ever before. Please do keep in touch with me with ways to improve it and keep it on the forefront. If you think the book lacks anything, let me knowI'll add it, because I want to make sure this book stays on top.