在序列图上一个序列接收和发送消息(又称交互)，能通过连接消息和框架元件边界，建立模型(如图2所见到)。
On sequence diagrams incoming and outgoing messages (A.K.A. interactions) for a sequence can be modeled by connecting the messages to the border of the frame element (as seen in Figure 2).
大多数边界是很明显的：网络连接、进程与进程的通信、文件系统、操作系统接口等等，但是有些边界就不好辨别。
Most boundaries are obvious: network connections, process-to-process communication, file systems, operating system interfaces, and so on, but some boundaries are more subtle.
它是Web平台协作的第一个套件，也是连接组织边界外不同组织的人员的社会网络套件。
It is the first suite of Web-platform collaboration and social networking suite connecting people from different organizations outside organizational boundaries.
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