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-===============================================================
- Design principles of `texnansi.vec':
-===============================================================
-
-* Make all 228 glyphs in typical plain vanilla text fonts accessible.
- (Avoid need for second copy of font with different encoding)
-
-* Provide access to `extra' f-ligatures (ff, ffi, ffl) and dotlessj
- if the font has these.
-
-* Make 58 accented / composite `standard' characters directly accessible
- (so don't have to use TeX's \accent mechanism - improved hyphenation)
-
-* Follow ISO Latin 1 in 160 - 255 range --- which matches Windows ANSI.
- (And matches Cork T1 encoding for accented characters in 192 - 255)
-
-* Fill in from Windows ANSI in 128 -- 159 range
- (which means one can use a Windows editor for the source file)
-
-* Have special characters where plain TeX (OT1) has them hard-wired.
- (ae, oe, oslash, AE, OE, Oslash, germandbls)
-
-* Have accents (grave, acute, caron, breve. macron, ring, cedilla,
- circumflex, tilde, dieresis) mostly where plain TeX (OT1) has them
- hard-wired.
-
-* Follow `TeX typewriter' in 32 -- 127 as much as reasonable
- (so verbatim environment works as expected)
-
-* Fortunately, glyphs accessed only via ligature mechanism in TFM can
- be anywhere: ff/fi/fl/ffi/ffl
- exclamdown/questiondown, quotedblleft/quotedblright, endash/emdash
-
-* Avoid character codes 0, 9, 10, 13, and perhaps 127, since much brain
- dead software has trouble with those.
-
-We use `control characters' (0 -- 31 and 127), since we need space for more
-than 224 slots, and since we want to match some aspects of `TeX typewriter'.
-
-Overall layout:
-
-0 Avoid since some buggy software uses null-terminated string ops
-
-4 -- 8 `fraction', `dotaccent', `hungarumlaut', `ogonek', `fl'
-
-9 Avoid (tab - which is treated as white space by some software)
-
-10 Avoid - some applications have hard-wired for `newline'
-
-11 -- 12 ff, fi could actually be anywhere (accessed via ligs)
-
-13 Avoid - some applications have hard-wired for `return'
-
-14 -- 15 ffi, ffl could actually be anywhere (accessed via ligs)
-
-16 -- 17 dotlessi/dotlessj \i, \j
-
-18 -- 24 grave/acute/caron/breve/macron/ring/cedilla accents.
- Some accents occur again higher up:
- (96), 180, *, *, 175, *, 184
-
-25 -- 31 germandbls/ae/oe/oslash/AE/OE/Oslash.
- All special characters occur again higher up:
- 223, 230, 156, 248, 198, 140, 216
-
-32 space. Any sane font should have this! And have it here!
-
-% NO: 34 quotedblright (148) keep: quotedbl
-
-39 quoteright (146) *not* quotesingle
-
-% NO: 60 exclamdown (161) keep: less
-
-% NO: 62 questiondown (191) keep: greater
-
-NOTE: exclamdown and questiondown can go anywhere (via pseudo ligature)
-
-% NO: 92 quotedblleft (147) keep: backslash
-
-NOTE: quotedblleft and quotedblright can go anywhere (via pseudo ligature)
-
-94 circumflex (136) *not* asciicircum
-
-% NO: 95 dotaccent (*) keep: underscore
-
-96 quoteleft (145) *not* grave accent
-
-% NO: 123 endash (150) keep: braceleft
-% NO: 124 emdash (151) keep: bar
-
-NOTE: endash/emdash can go anywhere (via pseudo ligature)
-
-% NO: 125 hungarumlaut (*) keep: braceright
-
-126 tilde (152) *not* asciitilde
-127 dieresis (168) but use the one in 168 instead
-
-So we have displaced 5 characters (out of 12 possibles) from Windows ANSI:
-
- quotesingle (39), asciicircum (94), asciitilde (126),
- underscore (95), grave (96).
-
-but not: quotedbl (34), less (60), greater (62),
-but not: backslash (92), bar (124), braceleft (123), braceright (125)
-
-The five above then need to be patched in higher up.
-
-Conversely, we have moved down from Windows ANSI accents and special chars:
-
- grave (96), acute (180), macron (175), cedilla (184),
- circumflex (136), tilde (152), dieresis (168),
- quoteleft (145), quoteright (146),
- germandbls (223), ae (230), oe (156), oslash (248),
- AE (198), OE (140), Oslash (216).
-
-but not: quotedblleft (147), quotedblright (148),
-but not: exclamdown (161), questiondown (191)
-but not: endash (150), emdash (151),
-
-(This opens up some slots higher up that could be filled with other things).
-
-There are eight gaps in Windows ANSI: 128, 129, 141, 142, 143, 144, 157, 158,
-we need four for characters displaced from lower down:
-
- quotesingle (39), asciicircum (94), asciitilde (126), grave (96),
-
-Actually, we can omit grave, because it appears at 18 now.
-
-Finally, fill in the gaps, and adding minus, Lslash, lslash, Zcaron, zcaron
-
-128 Lslash
-129 quotesingle
-
-141 Zcaron
-142 asciicircum
-143 minus
-144 lslash
-
-157 zcaron
-158 asciitilde
-
-The rest (160 and above) is ISO Latin 1 / Windows ANSI \ No newline at end of file