Modeling, authoring and formatting hypermedia documents in the HyperProp system

This paper discusses multimedia and hypermedia modeling, authoring and form atting tools, presenting the proposals of the HyperProp system and comparin g them to related work. It also highlights several research challenges that still need to be addressed. Moreover, it stresses the importance of docume nt logical structuring and considers the use of compositions in order to re present context relations, synchronization relations, derivation relations and task relations in hypermedia systems. It discusses temporal and spatial synchronization among multimedia objects and briefly presents the HyperPro p graphical authoring and formatting tools. Integration between the propose d system and the WWW is also addressed.