Meanwhile, three levels including interactive synchronization among objects and synchronization in and between streams are given in the system.

同时，系统实现了三个层次，即对象间交互式的、媒体流内和流间的同步控制。

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For better multimedia interactive programs, need to develop a multimedia synchronization control language and multimedia based on the language editor.

为了更好的制作多媒体互动节目，需要开发一种控制多媒体同步的语言和基于该语言的多媒体编辑器。

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The second refers to interactivity, through which the subscriber can have full interactive control over the whole course of communication. Finally, it is synchronization.

二是交互性，指向人们提供多种交互控制的机制，用户对通信的全过程有完整充分的交互控制能力。

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