JANUS: an interactive document formatter based on declarative tags

Authors:
D. D. Chamberlin;O. P. Bertrand;M. J. Goodfellow;J. C. King;D. R. Slutz;S. J. P. Todd;B. W. Wade
Affiliations:
IBM Research laboratory, San Jose, CA;IBM Research laboratory, San Jose, CA;IBM Research laboratory, San Jose, CA;IBM Research laboratory, San Jose, CA;ESVEL. Inc., Campbell, California;IBM United Kingdom Scientific Centre, Winchester, England;IBM Research laboratory, San Jose, CA
Venue:
IBM Systems Journal
Year:
1982

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A high-level approach to computer document formatting

POPL '80 Proceedings of the 7th ACM SIGPLAN-SIGACT symposium on Principles of programming languages
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Abstract

This paper describes the architecture of an experimental document composition system named JANUS, which is intended to support authors of complex documents containing mixtures of text and images. The JANUS system is highly interactive, providing authors with immediate feedback and direct electronic control over page layouts, using a special two-display workstation. Authors communicate with the system by marking up their documents with high-level descriptive "tags." A tag definition language is provided whereby new tags may be defined and the format of each tagged object may be controlled.