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LHFONTS version 3.4                                             file T1inT2.en
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This file includes information about common parts and differences
of T1 and T2 encodings and LH fonts and EC fonts(1.0).
There is also explanation why it was happen.

I.

File letextit.mf (for Italic font) has one serious difference for Typewriter
Italic fonts which was borrowed from CM textit.mf file:
_first_ run _Italic_ letters and specials (dotless letters and f-ligs)
then if monospace=true: letter_fit:=0
and _then_ run uppercase letters and common roman/italic specials.

EC Typewriter Italic extextit.mf run both Uppercase and Italic letters with common
letter_fit; in this case Uppercase letters look _much more_ narrower than
in slanted fonts and they should be unreadable in lower resolutions.

II.

Here goes information about signs placed in common part of T1 and T2
encodings and differences of shapes, glyphs and codes (if they exist)

l -- heavily borrowed from CM or/and EC
c -- created for T2 encoding
* -- borrowed from EC but corrected for mentioned reasons


lgcspl.mf --
   Metafont program for the characters in positions of ligatures
   for the "caps and small caps" fonts
                           X2     T2*
  l   I                          "19
  l   J                          "1a
      if roman_ec:
  l   FI,FL,FFI,FFL   fi         "1b-"1f -- for T2* stuff only

lgcyracc.mf --
   Accents
    - borrowed from EC fonts "00-"0c
    + additional Cyrillic accents
                           X2     T2*
      from T1
  l   Agrave              "00 `  "00   accent grave
  l   Aacute              "01 '  "01   accent acute
  *   Ahat                "02 ^  "02   accent circumflex
                                       edited
                                       accent_gap added (if undefined)
                                        for uppercase form
  l   Atilde              "03 ~  "03   accent tilde
  l   Aumlaut             "04    "04   accent umlaut
  l   Aacute_dbl          "05 '' "05   accent hungarian umlaut
  l   Aring               "06    "06   Scandinavian circle
  l   Ahachek             "07    "07   accent hacheck
  *   Abreve              "08    "08   accent breve
                                       edited to avoid "hat" form if cmssq8
                                       (this correction maybe is not so good)
                                       accent_gap added (if undefined)
                                        for uppercase form
  l   Abar                "09    "09   accent macron (bar)
  l   Adot                "0a    "0a   accent dot
  *   Acedilla            "0b    "0b   cedilla
                                       edited: y_move used in lowercase form
  *   Aogonek             "0c    "0c   ogonek
                                       Macro easy_ogonek used (emulates polish macro)
                                       (Also easy_ogonek is used for letter accents)
      Cyrillic symbols:
  c   Afrown              "12    "12   accent reversed breve
  c   Agrave_dbl          "13 `` "13   accent reversed hungarian umlaut
  c   Acyrbreve           "14    "14   Cyrilllic breve
  c   Ahcross             "17          accent hor cross
  c   Agrave_cross        "19          accent grave_cross
  c   Aacute_cross        "1a          accent acute_cross
  c   Acomma              "1b          comma above letter
                        "1c-"1f        Cyrillic letters N_ltl and Delta

lgcyrsym .mf --
   Glyphs for EC and Cyrillic symbols used with floating codes
                           X2     T2*
  c   palochka            "0d    "0d   symbol Palochka
  l   openq                            Single German opening quote (looks like ,)
  c   angle_left          "0e    "0e   Single left angle bracket
  l   lguillemet                       Single left guillemet
  c   angle_right         "0f    "0f   Single right angle bracket
  l   rguillemet                       Single right guillemet

  *   dash                "16    "16   Em dash/if monospace Hyphen
                                       Shortened Cyrillic em-dash
  l   wordmark                   "17   Compound word mark
  l   pmzero              "18    "18   Zero for p mille sign (EC: "17)

  l   dbl_quotes          "22    "22   Straight double quotes

  *   No                  "9d    "9d   Cyrillic symbol `Number'
                                       Changed shape for good METAFONTing
                                       (e.g. in tt and ss fonts)
  c   currency            "9e    "9e   Cyrillic Currency sign (borrowed from tc fonts)
  l   section             "9f    "9f   Section sign

  l   baseqq              "bd    "bd   German Opening quotes   (looks like ,,)  (EC: "12)
  *   flqq                "be    "be   Cyrillic Opening Quotes (looks like <<)  (EC: "13)
                                       Used more familiar shape for Russian users
  *   frqq                "bf    "bf   Cyrillic Closing Quotes (looks like >>)  (EC: "14)
                                       Used more familiar shape for Russian users

      T1/T2-outsider:
  l   pound ("bf)                      Sterling sign

lg(r/i)lig.mf --
  Special letters
                           X2     T2*
  l  i_dotl                      "19   i dotless
  l  j_dotl                      "1a   j dotless


===============================================================================
Next files include only unfloating and unchanged gpyphs

lgengsym.mf --
  Glyphs for ec and Cyrillic symbols used with unchanged codes
     "10 oct"020"  ``  Opening quotes
     "11 oct"021"  ''  Closing quotes
     "15 oct"025"  --  En dash/if monospace Hyphen
     ***Em dash ("16)  in file lgcyrsym

     "20 oct"040"      Blank-space sign
     "21 "!"       !   Exclamation point
     ***Double quotes ("22) in file lgcyrsym for (possible) floating
     "23 "#"       #   Hash mark (number sign)
     "24 "$"       $   Dollar sign
     "25 "%"       %   Per cent sign
     ***Ampresand ("26) in files lg(rom/ital)p
     "27 "'"       '   Apostrophe
     "28 "("       (   Left parenthesis
     "29 ")"       )   Right parenthesis
     "2a "*"       *   Asterisk
     "2b "+"       +   Plus sign
     "2c ","       ,   Comma
     "2d "-"       -   Hyphen
     "2e "."       .   Period
     "2f "/"       /   Virgule (slash)

     ***Digits in files lg(r/i)digit
     "3a ":"       :   Colon
     "3b ";"       ;   Semicolon
     "3c "<"       <   Less than sign
     "3d "="       =   Equals sign
     "3e ">"       >   Greater than sign
     ***Question mark ("3f) in files lg(rom/ital)p

     "40 "@"       @   At sign
     ***Uppercase Latin/Cyrillic letters
     "5b "["       [   Left bracket
     "5c oct"134"  \   Reverse slash (backslash)
     "5d "]"       ]   Right bracket
     "5e oct"136"  ^   Circumflex (hat)
     "5f oct"137"  _   Underbar

     "60 "`"       `   Reverse apostrophe
     ***Lowercase Latin/Cyrillic  letters
     "7b oct"173"  {   Left curly brace
     "7c oct"174"  |   Vertical line
     "7d oct"175"  }   Right curly brace
     "7e oct"176"  ~   Tilde (squiggle)
     "7f oct"177"  -   Hyphenchar

lg(r/i)digit.mf - digits

lg(rom/ital)p.mf --
     "26 oct"046"  &   Ampersand
     "3f oct"077"  ?   Question mark
                       *Spanish open question mark moved out from T2

III. There were corrected is_cap put_accent put_gravis and put_dot macros in
     LH package accordingly to boolean cyrcaph which checks whether it is
     uppercase letter or not.

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LHFONTS version 3.4                                             file T1inT2.en
==============================================================================
