Return to e2 CVS log

Up to [CSRG BSD Unix] / 43BSDReno / share / doc / usd / 26.eqn

Annotation of 43BSDReno/share/doc/usd/26.eqn/e2, revision 1.1.1.1

1.1       root        1: .\"    @(#)e2  6.1 (Berkeley) 5/22/86
                      2: .\"
                      3: .NH
                      4: Photocomposition
                      5: .PP
                      6: Photocomposition techniques
                      7: can be used to solve some of the problems of typesetting mathematics.
                      8: A phototypesetter is a device which exposes
                      9: a piece of photographic paper or film, placing characters
                     10: wherever they are wanted.
                     11: The Graphic Systems phototypesetter[2] on the
                     12: .UC UNIX
                     13: operating
                     14: system[3] works by shining light through a character stencil.
                     15: The character is made the right size by lenses,
                     16: and the light beam directed by fiber optics
                     17: to the desired place on a piece of photographic paper.
                     18: The exposed paper is developed and typically used
                     19: in some form of photo-offset reproduction.
                     20: .PP
                     21: On
                     22: .UC UNIX ,
                     23: the phototypesetter is driven by a formatting program called
                     24: .UC TROFF
                     25: [4].
                     26: .UC TROFF
                     27: was designed for setting running text.
                     28: It also provides all of the facilities that one needs for
                     29: doing mathematics, such as
                     30: arbitrary horizontal and vertical motions,
                     31: line-drawing, size changing,
                     32: but the syntax for describing these special operations is
                     33: difficult to learn,
                     34: and difficult even for experienced users to type correctly.
                     35: .PP
                     36: For this reason we decided to use
                     37: .UC TROFF
                     38: as an ``assembly language,''
                     39: by
                     40: designing a language for describing mathematical
                     41: expressions,
                     42: and compiling it into
                     43: .UC TROFF .

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.