说明： CHM格式,讲述极限编程的好文档.具体介绍了什么是极限编程.极限编程的设计原则,极限编程的建模以及一些极限编程的想法 (CHM format, on the Extreme Programming good documentation. Specific details of what is Extreme Programming. Extreme Programming design principles of Extreme Programming Modeling and some thoughts Extreme Programming)
