PRESENTING INTERACTIVE MULTIMEDIA DOCUMENTS WITHIN VIRTUAL ENVIRONMENTS Topics: Augmented, Mixed and Virtual Environments; Augmented, Mixed and Virtual Environments; Collaborative Augmented, Mixed and Virtual Environments; Image-Based Modeling; Real-Time Rendering; Systems and Software Architectures for Rendering In Proceedings of the Third International Conference on Computer Graphics Theory and Applications - Volume 1: MCVE, 512-518, 2008 , Funchal, Madeira, Portugal