The SOAP library converts the information from the host language and format into an XML-formatted message that contains the function called and the arguments supplied.
soap库将用主机语言编写的信息和格式转化成xml格式的消息，其中包括调用的函数和提供的参数。
2
ZUL , an XML-formatted and easy-to read language, is used to describe the above registration form.