Modeling, authoring and formatting hypermedia documents in the HyperProp system

Abstract. This paper discusses multimedia and hypermedia modeling, authoring and formatting tools, presenting the pro-posals of the HyperProp system and comparing them to re-lated work. It also highlights several research challenges that still need to be addressed. Moreover, it stresses the impor-tance of document logical structuring and considers the use of compositions in order to represent context relations, syn-chronization relations, derivation relations and task relations in hypermedia systems. It discusses temporal and spatial syn-chronization among multimedia objects and briefly presents the HyperProp graphical authoring and formatting tools. In-tegration between the proposed system and the WWW is also addressed. Key words: Nested context model – HyperProp system – Multimedia/hypermedia formatting – Document logical structuring – Spatio-temporal synchronization