This paper combines spatial hypermedia with techniques from Geographical Information Systems and location based services. We describe the Topos 3D Spatial Hypermedia system and how it has been developed to support geospatial hypermedia coupling hypermedia information to model representations of real world buildings and landscapes. The prototype experiments are primarily aimed at supporting architects and landscape architects in their work on site. Here it is useful to be able to superimpose and add different layers of information to, e.g. a landscape depending on the task being worked on. We introduce a number of central concepts to understand the relation between hypermedia and spatial information management. The distinction between metaphorical (and abstract) versus literal (and concrete) spaces is introduced together with a workspace composition semantics and a distinction between direct and indirect navigation. Finally, we conclude with a number of research issues which are central to the future development of geo-spatial hypermedia, including design issues in combining metaphorical and literal hypermedia space, as well as a discussion of the role of spatial parsing in a geo-spatial context.

This paper addresses the problem of organizing material in mixed digital and physical environments. It presents empirical examples of how people use collectional artefacts and organize physical material such as paper, samples, models, mock-ups, plans, etc. in the real world. Based on this material, we propose concepts for collectional actions and meta-data actions, and present prototypes combining principles from augmented reality and hypermedia to support organising and managing mixtures of digital and physical materials. The prototype of the tagging system is running on digital desks and walls utilizing RFID tags and tag-readers. It allows users to tag important physical materials, and have these tracked by antennas that may become pervasive in our work environments. We work with three categories of tags: simple object tags, collectional tags, and tooltags invoking operations such as grouping and linking of physical material. Our primary application domain is architecture and design, thus we discuss use of augmented collectional artefacts primarily for this domain.

Cooperative work in Extended Enterprises needs a flexible shared workspace for team members to access and manipulate shared information objects in a well-coordinated working process. Current shared workspace systems do not adequately support the evolving character of shared workspaces as needed by Extended Enterprises, i.e. the dynamic cooperation processes, various kinds of shared information contents and the set of cooperative tools. In this paper, the usage scenarios and requirements developed in a European Extended Enterprise project are used to derive the requirements for shared enterprise workspaces. Our approach utilizes component-based cooperative hypermedia to organize shared enterprise workspaces that contain team and process structures, information contents and their corresponding tools. The approach extends classical hypertext models to shared hypermedia objects as well as dynamic bindings between these and the Groupware Components working on them. To demonstrate the approach, a prototype system and a prototypical usage scenario are presented.

We are investigating the design of digital 3D interaction technology embedded in a physical environment. We take as point of departure complex, collaborative industrial design projects involving heterogeneous sets of documents, and physical as well as digital 3D models. The paper introduces our notion of interactive room technology supporting industrial design and describes two examples of this technology: the Designers Workbench and the 3D Whiteboard, both integrated in a common distributed and collaborative infrastructure. The paper also describes a number of new easy-to-grab and lightweight interaction devices being experimented with in the interactive room environment. The interactive room technologies have all been designed with the requirement that they must seamlessly integrate both into the physical and into the digital work environment, while providing new affordances for industrial design work. Keywords: CSCW, Interactive rooms, 3D Environments, interaction devices, design support 1

Spatial parsers augment spatial hypermedia systems by letting the computer perceive the informal -- but visually apparent -- groupings formed by humans working with a spatial hypermedia tool. A number of research systems implementing 2D spatial parsing have been described in recent years. This position paper describes an implementation of a tailorable 3D spatial parser for the Topos system: a 3D information organization tool for use on desktops, interactive whiteboards and tables. A number of issues pertaining to 3D parsing as opposed to 2D parsing are discussed.

Spatial parsers augment spatial hypermedia systems by letting the computer perceive the informal -- but visually apparent -- groupings formed by humans working with a spatial hypermedia tool. A number of research systems implementing 2D spatial parsing have been described in recent years. This paper extends spatial parsing to 3D and describes an implementation of a tailorable 3D spatial parser for the Topos system: a 3D information organization tool for use on desktops, interactive whiteboards and tables.

Introduction An Extended Enterprise (EE) is a new form of organizing Business-to-Business (B2B) cooperation among business partners. Here, independent companies form a network to develop and deliver a product to a customer. An EE extends the concept of a virtual enterprise because it persists even after the product is delivered. Thus, the EE serves as a container for knowledge captured during product development and delivery, which can be used to aid partner acquisition and project organization for future projects. In an EE, cooperation occurs across organizational boundaries. Distributed teams must be formed and supported when defining and executing a joint business process. Hence, different computing infrastructures used by the different partners within an EE must be integrated. Likewise, access to the joint business process and sharing of information resources among partners must be facilitated. We believe that concepts from collaborative open hypermedia systems [9] can h