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MFS: a modular text formatting system
Abstract
This paper presents the design goals and architecture of the Modular Formatting System, currently being developed at West Virginia University. MFS applies to formatters the principles of separation of function used in many successful program systems. A small central kernel forms the basis for a family of formatting systems, tailored to specific applications and environments.
MFS is intended to support a wide spectrum of applications drawn from the experience of commercial composition, word processing, and research systems. It does not rely on any specialized terminal or input source characteristics. Output devices from line printers through high resolution typesetters are handled in a uniform manner. Users can exercise detailed control over document appearance, or work exclusively with styles predefined through macros.
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PIC is a language for specifying pictures so that they can be typeset as an integral part of a document preparation system. The basic objects in PIC are boxes, lines, arrows, circles, ellipses, arcs and splines, which may be placed anywhere and labeled with arbitrary text. Most of the effort in designing PIC has gone into making it possible to specify the sizes and positions of objects with minimal use of absolute coordinates. This paper describes PIC, with primary emphasis on those aspects of the language that make it easy to use.
Text processing and word processing systems typically require users to intersperse additional information in the natural text of the document being processed. This added information, called “markup,” serves two purposes: 1. it separates the logical elements of the document; and 2. it specifies the processing functions to be performed on those elements.
This manual is a beginner's manual for the SCRIBE document production system developed in the Computer Science Dept. at Carnegie-Mellon Univ. The reader is expected to have used a timesharing computer, to know how to use a text editor, and to understand the notion of a timesharing file system. No particular computer expertise or knowledge of programming is needed. SCRIBE is still under development. This first edition of the Introductory User's Manual was written for internal use in the Computer Science Dept., and the particular set of formatting commands that have been devised and documented are designed around the sorts of documents that computer scientist produce. Users in non-academic or non-methematical environments will have very little use for the Theorem or Equation features, but may find something else desirable. In time there will be separate editions of the manual. This manual was produced with SCRIBE and printed on the Computer Science Department's Xerox Graphics Printer.
Runoff The Compatible Time-Sharing System
- J E Saltzer