1.Use descriptor create model instance
like through MetaDescriptor3) create Person, we can use Person create Tom.

2.Editing Tom

<?xml version="1.0" encoding="utf-8"?>
<Person name="Tom" descriptors="xworker.example.thing.creatething.Person" age="30" sex="1">
<description><![CDATA[<h3>类型事物(Person)的作用</h3>
<p> 类型事物Person的名为属性(attribute)的子节点定义了本事物Tom的属性,
类型事物Perosn的名为事物(thing)的子节点定义了本事物Tom能够有Child子事物。</p>]]></description>
<Child name="Smisth" age="10" sex="1"></Child>
</Person>