Then, the author designs MDM that is a multimedia document model for broadband application, introducing its feasibility and putting forward its formal specification and advantages.

• 作者首先研究用户对多媒体文档的主要需求及多媒体文档的特点，分析现有多媒体文档模型的优缺点，提出面向宽带网络应用的多媒体文档模型MDM，分析其可行性、完备性和优越性。