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+[This is ./doc/fonts/ibycus3/tex/README
+ May 1992, revised Apr. 1994, revised for LaTeX2e Sep-Oct. 1995
+ Final notes on Ibycus 3, May 30, 1966 ]
+
+ ( THIS IS A TDS-CONFORMANT PACKAGE )
+
+BE SURE THAT ibycus3.map HAS BEEN COPIED AS DESCRIBED BELOW
+
+A sample input file is provided in iby3text.tex or ibycus3.ltx
+
+PLAIN TeX USAGE: \input iby3text
+
+ then: \setgreek10/12 (or other reasonable combination
+ of pointsize and leading)
+
+ then: Latin text \GK{}a)rxai=a gra'mmata\RM{} Latin again.
+
+ NOTE that the ) is a smooth breathing, not a parenthesis.
+
+LaTeX2e USAGE: \usepackage{ibycus3}
+
+ then: Latin text {\greek{a)rxai=a gra'mmata}} Latin again.
+ (Note the double braces, there is a font change here.)
+
+ change font size with the \fontsize macro, thus:
+
+ \fontsize{14}{17pt}\selectfont
+
+
+The TeX files in $TEXMF/tex/generic/ibycus3 together with the
+METAFONT files in $TEXMF/fonts/source/public/ibycus3
+{\em especially ibycus3.map} are intended to provide a
+reasonable degree of compatibility between David Packard Jr.'s
+Ibycus/TLG system, and the TeX and METAFONT environment. These TeX
+files may have to be moved to an appropriate branch directory of
+$TEXMF/tex/ if you are not using Karl Berry's path-searching
+or its equivalent.
+
+The package consists of a set of METAFONT files which use the original
+characters of Silvio Levy's greek fonts (these can be got from
+one of the CTAN archives and placed in $TEXMF/fonts/source/public/levy
+if you are using a TeX Directory Structure [TDS] layout of files)
+and combine them in ways which reflect the increased capabilities of TeX
+and METAFONT developed since Levy did the original greek for TeX.
+If you are not using a file searching system like Karl Berry's
+"kpathsea", see $TEXMF/fonts/source/public/ibycus3/ibycus3.mf for
+hints on making the levy source available
+
+Ibycus3 METAFONT files are in $TEXMF/fonts/source/public/ibycus3
+
+The most significant changes are:
+
+ 1. The large repertory of initial/medial sigma + letter pairs
+ is suppressed from the new fonts, and the new enhanced TFM
+ ligature scheme is used instead to provide for the automatic
+ differentiation between medial and final sigma.
+
+ 2. The cells thus opened up in the font mapping are used for
+ a variety of additional characters:
+
+ a. A full repertory of vowels with breathings and
+ barytone accents (absent from the original).
+
+ b. Digamma, koppa and sampi (the last in lowercase
+ late form only, since earlier forms are rather
+ problematic and are virtually unused even in
+ epigraphical texts).
+ NOTE: there is still room for things like acrophonic
+ numerals, and perhaps the two markers used to
+ distinguish numeric from alphabetic use of the letters
+ ought to be provided. Another possibility is
+ special symbols for text-edition, such as double
+ brackets. (Editor supplements can be done
+ using the characters defined in iby3extr.tex).
+
+ Iota subscript retains its simple form in 300dpi
+ renditions, and in any bitmap which drops below
+ 500dpi, but it thins out and develops a slight
+ rightward hook at 600dpi and above.
+
+ 3. All characters have been named. The constructs
+ ASCII"A" and oct"000" appear only at lower levels
+ of programming.
+
+ 4. Character spacing has been adjusted through kerning tables,
+ particularly around lowercase iota (file ibylig.mf).
+ There is more that could and should be done.
+ Maybe it will yet happen.
+
+ 5. Font mapping is specified independently of other
+ parameters, in a distinct and separate file (file ibycus3.map).
+ In some cases it may be more effective to remap the font
+ than to struggle with TeX remapping.
+
+ 6. Accents have been redesigned in several cases, usually
+ in an attempt to reduce crowding among the elements of
+ accent clusters. The accents with diaeresis have been shifted
+ to clear the dot they lean toward. A programming error which
+ produced the wrong displacement value with free-standing accents
+ has been corrected. Accents before uppercase vowels are
+ pair-kerned with the vowels. Angle brackets, half brackets,
+ double quotes, braces and a dagger are now provided (see
+ ibyextra.tex).
+
+The associated TeX files are:
+
+ 1. $TEXMF/tex/generic/ibycus3/ibycus3.tex
+
+ The driver file for this package (in plain tex).
+
+ 1a. $TEXMF/tex/generic/ibycus3/ibycus3.sty
+
+ The driver file for this package (in LaTeX2e).
+
+ 2. $TEXMF/tex/generic/ibycus3/set3grk.tex
+
+ Included by ibygrk.tex unless newnep format is running
+
+ 3. $TEXMF/tex/generic/ibycus3/tlgsqq.tex
+
+ The name suggests the association with coding of the
+ Thesaurus Linguae Graecae.
+
+ This file provides uniquely named macros for all combinations
+ of letter and accent, so that any invocation of the macro will
+ produce a sequence of characters corresponding with the
+ entries put into the TFM ligature table. These sequences may
+ always be used to generate accented characters. They are
+ based, with some slight modifications where David Packard's Ibycus
+ input coding seems too misleading, on the Ibycus adaptation of
+ TLG beta-code. ) and ( are used for breathings, ' and ` are
+ used for oxytone and barytone (to avoid preemption of the
+ usual TeX excape character) and = is used for perispomenon
+ to avoid preemption of the active tie character in plain.tex.
+ | is used for iota subscript. Order is significant.
+ Breathings or diereses come first, after the affected letter, then
+ accents, then iota subscript. + is dieresis, which should
+ only appear after u or i. '' is the mark of elision
+ Single quotes may be provided by `` and '', but isolate them
+ in braces whereever the first of either pair risks being
+ interpreted as an accent.
+
+ The digraphs, trigraphs etc can be read from tlgsqq.tex
+
+ Additional digraphs are K+ Koppa, k+ koppa, C+ lunate Cigma,
+ c+ lunate cigma, s+ sampi (lowercase late form only) and s| which
+ forces a medial sigma at word end.
+ << and >> give guillemets (not guillemots as Adobe
+ ornithologically supposes) and (( )) give single parentheses
+ though care must be taken that the first ( or ) is not
+ interpreted as a breathing. {((} and {))} are safe.
+
+ 4. ibycus3.map
+
+ This is {\em exactly} the same file as is used by METAFONT.
+ Copy $TEXMF/fonts/source/public/ibycus3/ibycus3.map
+ to the same directory as ibycus3.tex
+ or, even better, link it with a symbolic link.
+ It is so structured that it can be read by either
+ TeX or Metafont. The mapping is very close to that of GreekKeys,
+ which is distributed for the Macintosh by the American
+ Philological Association. Other mappings can be created
+ in the same manner.
+
+ 5. $TEXMF/tex/generic/ibycus3/Uibycus3.fd
+
+ Supporting fd file for LaTeX2e.
+
+ 6. $TEXMF/tex/generic/ibycus3/iby3extr.tex
+
+ Some editorial symbols for classical editions.
+
+ 7. $TEXMF/tex/generic/ibygrk/ibycus3.ltx
+ $TEXMF/tex/generic/ibygrk/iby3text.tex
+ The exquisite little poem by Ibycus of Rhegium, until recently
+ almost the only thing known by him. (The Ibycus system
+ developed by David Packard is only indirectly named after
+ the poet. The direct inspiration was Packard's cat.)
+
+NOTE: Earlier users of this package may be dismayed by the new naming
+system for the fonts, but it seems the only way to provide for
+desirable results. It is necessary to keep this Ibycus package
+clearly distinct from the new package announced below. Symbolic
+links are provided to ease the transition. Ibycus4 (see below) will
+be as close as possible to Ibycus3 in all external respects, but
+there are some improved set widths which might clobber old carefully
+adjusted text spacings.
+
+The new naming convention uses "ibycus3" wherever possible, and
+the shorter string "iby3" where that would lead to ambiguity.
+some of the individual METAFONT character files are simply
+taged with the number 3. 8+3 filename compatibility is preserved.
+(with difficulty).
+
+The names of PK and TFM files follow Karl Berry's font name convention
+( 84 is the encoding for Ibycus 4, for which see below).
+
+Foundry Facename Weights Variants Encoding_Variants DesignSize
+
+f ib [r], b r, o 83, 84 [10], 9, 8
+
+fibr83 fibo83 fibb83
+
+ with METAFONT design-size additions
+fibr838 fibo838 fibb838
+fibr839 fibo839 fibb839
+
+
+
+Still in the future.
+
+ Ibycus4 will have the major epigraphical characters and conventions,
+ dotted letters, epsilon and omicron with perispomene accent
+ for pre-403 Attic orthography, uprighted italic h for aspirate and
+ a special set of TFM files for "stoichedon" inscriptions.
+ Maybe even a prime that really works for numbers.
+ The input coding for Ibycus4 is hardly changed at all from
+ Ibycus3 coding: The apostrophe and single quotes can be
+ given as ` {`} and ' {'} instead of having to be doubled
+ and <> give conjectural emendation angle brackets without
+ requiring an excursion into math mode. ! {\bang} gives
+ a dotted letter for all except iota-subscripted vowels.
+ Slight improvements in set widths, which is the chief reason
+ for keeping Ibycus3 and Ibycus4 clearly separate.
+
+ Also in the works, a type1 version.
+
+Pierre A. MacKay
+Department of Classics
+University of Washington
+mackay@cs.washington.edu