本文首先简述了窗口系统与计算机会议系统之间的关系，并介绍了白板和指针在上述系统中的作用以及所应具有的功能。
The abilities and functions of whiteboard and telepointer in computer conference (CC) system are introduced after a brief description to window system and its relationship with CC.
本文首先简述了窗口系统与计算机会议系统之间的关系，并介绍了白板和指针在上述系统中的作用以及所应具有的功能。
The abilities and functions of whiteboard and telepointer in computer conference (CC) system are introduced after a brief description to window system and its relationship with CC.
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