HCI Bibliography Home | HCI Conferences | HYPER Archive | Detailed Records | RefWorks | EndNote | Hide Abstracts
HYPER Tables of Contents: 87899191Z9393X93Y93Z969797X

Proceedings of the Eighth ACM Conference on Hypertext -- Posters and Demonstrations

Fullname:Hypertext'97: -- Posters and Demonstrations
Editors:Mark Bernstein; Leslie Carr; Kasper Østerbye
Location:Southampton, UK
Dates:1997-Apr-06 to 1997-Apr-11
Standard No:ACM ISBN 0-89791-866-5; ACM Order Number 614970; ACM DL: Table of Contents hcibib: HYPER97; hcibib: HYPER97X
Papers:40; 42
Links:Conference Home Page (defunct) | Posters (defunct)
  1. Posters
  2. Demonstrations


A Categorisation of External Applications for the Integration in Cooperative Systems and Hypermedia Systems BIBA
  Ajit Bapat
As applications "grow together", the integration of legacy applications is becoming more and more important. While there are adequate solutions for the interoperability of non-cooperative, non-hypermedia applications the objectives and possible solutions for integrating applications from the fields of CSCW and hypermedia are far more complex. Looking at existing applications, three basic characteristics can be identified: "ordinary" (i.e. single user, non-hypermedia) applications, cooperative applications, and hypermedia applications. Considering various combinations of these characteristics, the poster presents a categorisation of different settings of calling and called applications -- 14 categories altogether. Examples for the categories are given along with problems that arise when aiming at integrating external applications in these settings.
A User-Centred Hypermedia Generator BIBA
  Robert S. Bishop
The term hypermedia is currently synonymous with the World Wide Web (Web). However in its present form the Web is failing to realise the original ethos of hypermedia systems to augment the users creative and cognitive process. Our aim is to address this failure by enabling readers to superimpose their own organisation onto existing hypermedia collections thus freeing them from the imposition of inappropriate presentational style and structure. Our contention is that such a system would enable us to shift the traditional roles of author and reader, empowering the reader to determine for themselves the structure and content of documents.
Supporting Time-Depended Transmission of Hypermedia BIBA
  C. Bouras; V. Kapoulas; P. Spirakis; A. Tatakis
In this poster we present an HTML-like language that supports embedded timing information that can be used for the construction of a "playback" schedule for the various media contained in a hypermedia document. This language is the core of our model multimedia documents, which preserves the spatio-temporal presentation of the involved media. In order to test the validity and the performance characteristics of the language a pilot application has been implemented under the UNIX and Windows 95 platforms. The network handling routines have been implemented with the use of the RTP/RTCP protocols.
HyperGeo: A Hypermedia-Based Geographical Information System BIBA
  Patrice Boursier
If we consider the whole set of spatially-oriented applications, we must differentiate between two kinds of users, expert users on the one hand and non-experienced or naive ones on the other hand. In order to satisfy the different kinds of user requirements, various approaches have thus been proposed for querying so-called geographical information systems (GIS). Following these considerations, we have developed a user interface model which provides a simple environment for presenting and interacting with geographical entities through what we have called dynamic maps. This approach is based on the HyperGeo data model.
The WAG (Web-at-a-Glance) Architecture BIBA
  T. Catarci; G. Santucci; S. K. Chang
The open growth of the Internet, the amount of available information, and the typical access modality (i.e., browsing) cause the puzzled user to search for the information of interest in a labyrinth of links. Web-at-a-Glance (WAG) is a system allowing the user to query (instead of browsing) the Web. WAG performs this ambitious task by constructing a personalized database, pertinent to the user's interests. The system semi-automatically gleans the most relevant information from several Web sites, stores it into a database, and provides the user with a visual query interface equipped with a powerful multimedia query language.
Applying Hypermedia-Techniques in Narrative Tutorial Multimedia Training Packages BIBA
  Ann Dobbeni; Theo Lenaerts; Jan Daniels
Storytelling is used to arrange content into meaningful patterns. But a narrative includes not only the story being told (content) but also the conditions of its telling (structure and context). In a purely tutorial training programme, the structure of the storytelling is a linear ordering of parts of the story, organised in a logical and hierarchical structure. But how can one keep the linear structure of the tutorial approach and still give the user keys for cross-reference (context)? Dividing the story into separate independent units (e.g. through concept-mapping) and combining it with hypermedia-techniques provide a possible answer.
Quality Criteria and Metrics in Hypertext Evaluation BIBA
  Francisco V. Cipolla Ficarra
New forms for structuring information in interactive systems need continual quality control, above all at the design stage, to maintain and promote user-computer communication. We present the quality criteria and metrics required to be able to evaluate a hypertext and hypermedia application though the use of Hypermedia Design Model (HDM). The objective is to elaborate a method for design- oriented hypertext/hypermedia evaluation. Knowing the types of resources in each case study helps the production of our method given that it clarifies the specific entities to be studied and the type of metric to be applied (principally in statistical areas).
Authoring Using a Terminology Service BIBA
  Carole Goble; Jacki O'Neill; Joe Bullock
Our research concerns author support for semantic hypermedia systems by using a terminological conceptual model to automatically infer links. The model is managed by the GALEN Terminological Service acting as a link resolution service in an open hypermedia environment and is represented in the Description Logic GRAIL. GRAIL supports the principled composition of complex descriptions and dynamic auto-classification of those descriptions to act as a) a typed link system and b) a semantic index capable of supporting imprecise and exploratory content-based queries. Exploratory prototypes include a system for tourist information (TourisT) and standardisation documentation.
Semi-Automatic Generation of Cross-Reference Links in a Hypertext Book: A Case Study BIBA
  Luc Goffinet
This poster deals with the problem of automatic cross-referencing in a hypertext book. A statistical approach is first introduced, based on the computation of similarity coefficients between pieces of texts. After this, a complementary approach is considered to benefit from a priori information such as existing manual cross-references. A semi-automatic method to generate cross-references is finally outlined.
The Pausanian Notation: A Method for Representing the Structure of a Hyperdocument BIBA
  Nickolaos Gouraros
The Pausanian method is a diagrammatic notation for representing the static and dynamic properties of a single or a collection of hypertext documents in order to help the designer to visualise their hypertextual structure. It employs a wide range of shapes and symbols based on the characteristics that compose the structure of a document containing hypertext links. The name Pausanian derives from Pausanias, a Greek historian, traveller and geographer. During the 2nd century AD he was travelling around Greece and describing all the sites and monuments he was seeing. His work was called "Description of Greece" which gives a detailed account of the monuments of art and of the legends connected with them.
Team: Telescheduling Enhanced by Authentication and Management Functions BIBA
  R. Grassmann; C. Becker; T. Engel; C. Meinel
TEAM is being developed at ITWM-Trier to demonstrate how standard Internet technology can be used to solve complex intranet scheduling tasks platform independently. A web server with an SSL-module and a database has been extended to create a filofax-like user interface. Project groups can schedule meetings or personal dates, gather notes and administer lists etc. without being confined to a single operating system or location. Confidentiality is provided by cryptographic means. Local data is updated to reflect changes made to the database which are relevant to a user's current view. Advanced replication techniques will be tackled in a further stage of the project.
Transposing the 'Large Glass' Into Hypermedia BIBA
  Dew Harrison
The presentation concerns current research into the extent to which hypermedia is priviledged in the understanding and development of concept-based art. The work processes along two strands of inquiry, the precedence of idea over representation in the history of art and the development of hypermedia technology as 'idea holding'. The two are brought together through the practise of transposing the work of Marcel Duchamp, summated in his piece the 'Large Glass,' into hypermedia. The work discussed at this event will cover the pilot study for the project, an Internet piece entitled '4D Duchamp'.
Semantic Spaces: A New Access Paradigm to Hypermedia Systems BIBA
  Michael Klemme
A new access and organization paradigm for hypermedia systems, Semantic Spaces, provides users with a facility to organize and record their understanding of the hypermedia system. These user-generated maps are themselves an integral part of the hyperspace and can be shared and collaboratively worked on.
Hyperfiction Interfaces BIBA
  Raine Koskimaa
In the paper I will address the question of hyperfiction interfaces, concentrating on two texts: Michael Joyce's 'Afternoon. a story' and Stuart Moulthrop's 'Victory Garden'. In the case of these two hyperfictional narratives the concrete interaction mainly occurs at the level of plot -- the arrangement of narrative units (lexias). In addition, the reader's decisions have effects also at the levels of story and narration. I suggest that hyperfiction interfaces might be developed in the direction, where the formal aspects of interaction were more explicit for the reader, thus making the effect of interaction stronger, still allowing a high degree of openness for the text.
The Missing Link: The Application of Metrics to Hypermedia Authoring BIBA
  Maria Emilia Xavier Mendes; Wendy Hall; Rachel Harrison
At the University of Southampton we are carrying out a research project called SHAPE (Southampton Hypermedia Authoring Paradigm for Education). The aim of SHAPE is to aid authors in the development of good quality large-scale hypermedia applications for education. In this sense, good quality means easy reuse and maintenance of information. We also expect the authoring tool to influence the authoring process in a positive manner. We are developing metrics in order to identify how adequate an authoring tool is for the maintainability of applications, information reuse in applications as well as the level of authoring effort required. The poster will illustrate the results from the first SHAPE study and discuss their analysis. It will also show the methods by which we are collecting data for the quantitative evaluation of hypermedia authoring.
Electronic Tools for Dismantling His Master's House BIBA
  Wendy Morgan
Hypertextual and poststructuralist theory have yet to produce a fully theorised practice of poststructuralist feminist hyper-textuality in research writing. A recent feminist text, Lather and Smithies' Troubling Angels: Women Living with HIV/AIDS (1995/7) mixes genres and plays with format -- but struggles to break out of the linear, closed form of the book. With the author's consent I have reinscribed it as a hypertext, less a reiteration than a re-placement of her text(s) and a supplement. This demonstration does not seek to raze the disciplines of research, but to raise questions about their textual conditions of possibility and to open up such texts to further readings, including the authors.
The Generation and Management of Metadata in Support of the Automatic Hypertext Linking of Multimedia Objects BIBA
  William W. Noah
The explosive growth in the volume of information available electronically continues unabated. Managing these large quantities of information remains a challenge for management in both government and industry. TRW's Digital Media Systems Lab has been working for five years to address the problems of information management for a wide range of disciplines. The prototype system that has resulted from this research, InfoWeb, can be described as an 'information infrastructure.' The subsystems integrated within InfoWeb primarily serve to generate and manage descriptive metadata associated with 'content objects' text, complex documents, graphics, images, video, audio, numeric data, etc. The metadata add value to the intellectual content of the content objects and provide for varied retrieval strategies, notably through complex searches and automatic hyperlinks. Once a relevant object has been located through a search, much useful navigation of the data space can be conducted by following links.
Systematic Use of Flexible Process Model to Build Hypermedia Artefacts BIBA
  Luis Antonio Olsina
We propose an innovative, integrated software process model, called Flexible Process Model, to be applied in the development of hypermedia artefacts. This strategy, when instanciated in a specific project, implies a systematic use of model-based constructors, both logical and physical models. Among the first we can enumerate plan model as well as requirement, conceptual, navigational, abstract interfaces and validation models. Among the second, we use essentially flexible prototypes as physical model. We will schematise the phases, tasks and activities, in a high level of granularity. Next, we will stress functional, informational and behavioural perspectives.
Constraint-Based Hypertext Authoring and Evaluation BIBA
  Ath. Papadopoulos; M. Vaitis; M. Tzagarakis; K. Papoutsis
Our purpose is to provide a hypertext model and authoring methodology that support the creation of high quality documents and reduce authoring and maintenance efforts. The hypertext model consists of the schema, constraint and quality models. A schema includes typed nodes and links and interconnection constraints. Explicitly specified constraints express further semantic or structural properties. The quality model employs constraints and well-defined primitive metrics, and enables author to define measurements of high level document characteristics, for example usability, and to control the conformance of document to the corresponding schema. The use of constraint and quality specifications facilitates iterative document evaluation and enables flexible schema and document evolution.
Automatic Web Interfaces and Hypertext Browsing for Object-Relational Databases BIBA
  Mark Papiani; Alistair N. Dunlop; Anthony J. G. Hey
Reformatting information currently held in databases into HTML pages suitable for the Web requires significant effort both in creating the pages initially and their subsequent maintenance. These costs can be avoided by coupling a Web server to the source data within a database. The purpose of this research is to generate automatically Web interfaces to object-relational databases using metadata from the database catalogue. A prototype system has been developed to provide automatic Web interfaces employing a graphical means of specifying queries. Hypertext browsing of object-relational databases is made possible by creating dynamic links that are included automatically within the query results. These links are derived from relationships inferred by referential integrity constraints defined in the metadata.
On Demand Publishing in the Humanities BIBA
  Sarah Porter
This project has explored the use of the World Wide Web as a platform for distributing supporting reading materials to humanities undergraduates. An integrated set of hypertext materials, consisting of subject overviews, summaries of key texts and, crucially, a 'reading list' of full-text extracts from key works, were produced for each of three modules ('Postmodernism and Fiction', 'American Moments' and 'Manifestos of Modernity'). The preparation process for each module and the undergraduates use of the materials have been continuously evaluated and assessed; issues examined have included the undergraduates use of the materials, copyright, and digitisation of texts. A WWW page for the project is at http://www.livjm.ac.uk/on_demand/
The Collaborative Hypermedia Educational Framework for Computer-Based Education BIBA
  Ajaz Rana; Michael Bieber; Nancy Coppola
Few developing or using computer-based courseware approach instructional development in a coherent and systematic pedagogical manner. We propose the Collaborative Hypermedia Educational Framework (CHEF) for instruction. The framework provides a fundamental philosophy for serving students, instructors and content developers in a principled manner. This framework also should provide guidance on how to best utilize new technologies. As a framework based on learning theories and principles, we believe it also will serve traditional classroom activities. We describe how CHEF meets criteria of several educational theories: anchored instruction, cognitive flexibility theory, student centered teaching, scaffolded knowledge integration, and active learning.
NT4.1online, A Parametric Catalogue of Italian Earthquakes on the Web BIBA
  G. Rubbia Rinaldi; M. Padula; M. Stucchi; A. Zerga
We shall illustrate a current experience in developing the server emidius.itim.mi.cnr.it to exploit new means of disseminating information on felt and damaging effects of earthquakes ('macroseismic data'). The demonstration will illustrate: NT4.1online from the point of view of WWW page composition (passive, active, dynamic); the user interaction for querying; the conceptual associations among data; the integration of related archives. NT4.1 online is implemented on workstation SUN SPARC5 under Solaris 2.5, exploiting public domain packages (MiniSQL interfaced with PHP/FI) and is readable via Netscape 2.0.
A Hypermedial Virtual Partner as Learning Mate BIBA
  Teresa Roselli; Antonietta Di Donfrancesco; Armando Lombardi; Stefania Loverro
Hypermedial learning programs reproduce the cognitive dynamics inherent in man, allowing students to construct learning paths through exploration. This stimulates talented students but tends to penalize those less able to manage their learning paths alone. We propose Hyperpro-plus, an intelligent hypermedia system for learning logic programming and Prolog embodying a tutor component and a virtual partner component. The tutor can globally assess the student's performance and dynamically reconfigure the knowledge accessible, to contain him within suitable paths. The virtual partner helps him to solve any difficulties encountered with structured exercises, guiding him with minimal suggestions. It acts as a learning mate, adopting the same level of knowledge as the student to create a collaborative relationship between peers.
Tailoring Web Pages to Users' Needs BIBA
  O. Signore; R. Bartoli; G. Fresta
As WWW users can give different relevance to various types of information, we developed a very simple 'agent' that parses the document supplied by the server taking appropriate actions based on the user profile, and returns the document tailored to user's interests. The agent supports filtering of links and of semantically tagged parts of the document, as well as multi-ended and weighted links. The hypertext provider must just use a very simple HTML extension, that allow to semantically tag paragraphs and links, and does not affect the actions taken by an ordinary HTML browser.
Converting TeX Into a PDF-Generating Tool BIBA
  Han The Thanh
The program tex2pdf is a combination of TeX as a formatting and typesetting system and PDF (Portable Document Format) as an open standard for hypertext document format designed by Adobe. tex2pdf tries to take advantages of both TeX and PDF. As the result it allows for better integration of hypertext features introduced by PDF with the level of quality of TeX-formatted output. Generating PDF-based hypertexts out from sources based on a programming-language-like description also allows to create complex hypertext documents with high typographical quality in an easy way.
Is 'Lost in Hyperspace' Lost in Controversy? BIBA
  Harold Thimbleby; Matthew Jones; Yin Leng Theng
Although much research effort has been invested to address the "lost in hyperspace" (LIH) problem, it still remains unsolved. The LIH problem has given rise to much controversy itself. Some think that LIH is one of the most difficult issues in hypertext research; while others think LIH is not a significant problem, and that efforts should be channelled to address more pressing issues such as response times and conventional human factors. In this paper, we argue that LIH is real and certainly merits further investigation. LIH is not just a psychological problem, it is also an engineering one.
Document Structure, Individual Differences and the Learning Process BIBA
  S. Wilkinson; A. Crerar; N. Falchikov
We report an experiment in which 60 subjects were screened for cognitive style and spatial ability then divided into two matched groups. Group A used a well known, large HCI text for the remainder of the experiment and Group B used a full hypertext version of the same publication. Each group performed two tasks with their assigned medium; Task 1 comprised a set of short closed search questions and Task 2 was an open-ended question requiring the gathering and synthesis of information from several parts of the text. Results are presented which address interplay between document type and cognitive profiles and between document type and usability across tasks.


The Ocean of the Streams of Story: A Compilation of Virtual Reality Hypertext Projects BIBA
  Dan Ancona
The Ocean of the Streams of Story is a collection of projects at the Institute for Advanced Technology in the Humanities that explore the use of 3D graphics (using Virtual Reality Modelling Language as well as static renderings) as hypermedia. The challenges and possibilities in the design of these kinds of hypermedia will be compared to the challenges and possibilities of other forms of hypertext. The new metaphors, idioms and interfaces to more traditional hypertexts made possible by the deployment of this technology will be speculated upon as well.
Stomp: Courseware for Teaching Introductory Physics BIBA
  Richard Bacon; J. L. Hunt
SToMP is an instruction package for introductory level Physics. It is divided into broad topic modules (Vibration and Waves, Measurements, Optics, etc.) and presents the material to the student in a multi-window environment. The study modules contain diverse elements such as brief scripts, simulations (both qualitative and quantitative), video/audio clips, photos, animations, etc. A number of tools are available such as calculator, spreadsheet, grapher, word processor etc. which can be used interactively with the elements of the study modules. In addition each module contains both self- and assessed-testing. The style of the various presentations are carefully set and controlled to create an environment with which the student can become comfortable, but the individual teacher can tailor the material or add material as needed.
Using a Link Service for Citation Linking BIBA
  Les Carr
The use of the Web as a digital library has been restricted to a distribution mechanism for documents with little advantage of the power of hypertext linking. The Distributed Link Service is being used in the 3-year Open Journals project to create new ways of using online documentary resources. This demonstration will show how the DLS can be used to add citation links to an e-print archive of Cognitive Science journal articles. The articles, unlinked in their various native formats, are delivered to a standard WWW browser via a DLS proxy server. As it does so it compares their contents against a citation database and dynamically links citations in the article's text to the document's bibliography, and links each matching bibliographic item to information from the citation database. This technique can either be used to enhance the hypertext functionality of legacy documents, or as a native mechanism for providing hypertext navigation on a new environment. It is particularly useful for overlaying a choice of navigational views onto collections of documents which are controlled or delivered by third-party servers.
Databases for Hypermedia Systems BIBA
  Erik Duval; Koen Hendrikx; Henk Olivie
For a decade, most researchers in the field of hypermedia and databases assume that only object-oriented DataBase Management Systems (DBMS's) can meet the persistence requirements of hypermedia applications and that relational DBMS's are not well suited for this purpose. However, in this demo, we demonstrate how a light, personal version of a relational DBMS (in casu Oracle) *can* be used to support a distributed hypermedia system. From the database representation, different sets of hypermedia documents are generated automatically. Moreover, when the information in the database is updated, the corresponding documents are automatically regenerated as well, and a personal hyperbase can be synchronised with a central server when it is integrated in the distributed infrastructure.
DHM/WWW -- Integrating Devise Hypermedia and the Web BIBA
  Kaj Grønbæk; Niels Olof Bouvin; Lennert Sloth
The demo presents the Devise Hypermedia (DHM) service for the WWW. The DHM service consists of a Java applet (DHM/WWW) extending the Netscape Navigator WWW browser with an interface to create and follow links stored on a DHM server. This combination of a WWW browser and the DHM/WWW applet and the DHM server adds anchor-based n-ary links to ordinary web-pages and the ability to create links to/from web-pages regardless of the ownership of the pages. The DHM/WWW applet acts as a filter of HTML documents and as an interface to the DHM server. The DHM/WWW inserts links (retrieved from the DHM server) into documents as they are retrieved by the WWW browser, thus making the presentation of link transparent to the user.
The Web Tour: An Implementation of a Guided Tour of WWW Pages BIBA
  Ray Jones
Guided tours are navigational aids that provide a set path through a hypermedia information space that is additional to the usual built-in linking mechanism. A tour will partially take over the navigational function from the user, in order to display a pre-defined set of information. We present, here, two weak forms of guided tour that can be implemented in HTML and follow this with a more sophisticated tour implemented using a scripting language. Finally, we describe a full-featured guided tour that provides the user with complete control over the progress through the tour and excursions from it.
Content Based Navigation in Multimedia Systems BIBA
  P. H. Lewis; H. C. Davis; M. R. Dobie; W. Hall; J. Kuan; S. T. Perry
In this demonstration an open architecture hypermedia system will be used to author and follow generic links between multimedia documents. Recently we have developed MAVIS, an extension to the Microcosm architecture for video image and sound and the demonstration will show how generic links may be authored on image selections using shape, texture and colour representations. The links may be followed from image selections in different images which give similar feature representations.
Hypertext Functionality in Software Design Systems BIBA
  Harri Oinas-Kukkonen; Janne Kaipala
This presentation demonstrates a means to support the coexistence and integration of different degrees of information structuredness in a flexible CASE environment. Hypertext support for MetaEdit+ meta-CASE environment has been implemented as (1) a hypertext support functionality for model editing and argumentation tools, known as Linking Ability, and (2) a design rationale system, known as Debate Browser. The presentation demonstrates those associative capabilities that support the flexible use of the environment, resulting into increased quality of designed systems and decreased perceived complexity of CASE tools.
The Net Generation of Earthquake Data: Nt4.1online, the Parametric Catalogue of Damaging Earthquakes in the Italian Area BIBA
  Giuliana Rubbia Rinaldi; Marco Padula; Massimiliano Stucchi; Angela Zerga
We shall illustrate a current experience in developing the server emidius.itim.mi.cnr.it to exploit new means of disseminating information on felt and damaging effects of earthquakes ("macroseismic data"). The demonstration will illustrate: NT4.1online from the point of view of WWW page composition (passive, active, dynamic); the user interaction for querying; the conceptual associations among data; the integration of related archives. NT4.1online is implemented on workstation SUN SPARC5 under Solaris 2.5, exploiting public domain packages (MiniSQL interfaced with PHP/FI) and is readable via Netscape 2.0.
Navigation in Large Hypertext Documents BIBA
  Petr Sojka
Methods of navigation in large hypertext document will be presented. Their application on 27,789 page project of electronic encyclopaedia will be shown and problems faced when using Adobe's Acrobat technology will be discussed. Tools used/developed during the project will be mentioned and experience with their usage shared.
Converting TeX Into a PDF-Generating Tool BIBA
  Han The Thanh
The program tex2pdf is a combination of TeX as a formatting and typesetting system and PDF (Portable Document Format) as an open standard for hypertext document format designed by Adobe. tex2pdf tries to take advantages of both TeX and PDF. As the result it allows for better integration of hypertext features introduced by PDF with the level of quality of TeX-formatted output. Generating PDF-based hypertexts out from sources based on a programming-language-like description also allows to create complex hypertext documents with high typographical quality in an easy way.
Supporting User-Defined Activity Spaces BIBA
  Weigang Wang; Joerg Haake
This demonstration will present the COWFISH (Cooperative Work in Flexible Information Systems using Hypermedia) system and illustrate its approach to the common problems in using and creating hypermedia-based task-specific activity spaces. Examples will be given to show how an activity space is defined with an example-based method, what intelligent aid is available for users of predefined activity spaces, and how an emergent pattern (a schema) is captured through gradual transformation from informal representations to more formal representations.
Spatial Hypertext and Multiscale Fiction-Pad++, PadDraw, Gray Matters BIBA
  Noah Wardrip-Fruin; Jonathan Meyer
Pad++ is a novel zoomable hypermedia system designed for exploring alternatives to traditional window and icon-based interfaces. The continuous, multiscale representation of the Pad surface allows high-level information to be recognized and manipulated at a distance, while low-level detail remains embedded in its context. PadDraw is a sample application built on top of Pad++ which supports the interactive creation, connection, and manipulation of objects. Gray Matters is a hypertext fiction created within PadDraw, in which 15 images from Gray's Anatomy form a patchwork body, each containing texts from four authors. Multiscale reading and navigation of Gray Matters can be accomplished with a single-button mouse or touchscreen.
Educational Hypertext: Design and Evaluation BIBA
  S. Wilkinson; A. Crerar; N. Falchikov
The hypertext system being demonstrated was implemented as an on-line Help file running under Windows 95. It contains the material of a major HCI text running to about 800 pages in the paper version and approximately 1,400 nodes in the hypertext. The first author will be demonstrating the various features of the user interface and describing the underlying design decisions made during system development. Performance and usability comparisons will be made between book and hypertext. More details are reported in a Poster, by the same authors, at this conference (see 'Document Structure, Individual Differences and the Learning Process'). The authors are grateful to Addison-Wesley for supplying an ASCII version of Preece et al. (1994) Human-Computer Interaction.