Bringing Your Classes to Life: Object Diagrams
将类引入实践: 对象图

scenario: 特定情境
underline: 下划线(对象名称加下划线)
anonymous object: 匿名对象
event hander: 事件处理程序
/ link: 链接
\ association: 关联
constraint: 约束

Learn:
Learning UML 2.0, O'Reilly
by Russ Miles & Kim Hamilton