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\relax
\documentclass[twocolumn]{article}
\usepackage[specification]{fontdoc}[2001/06/18]
\usepackage{shortvrb}

\MakeShortVerb{\|}

\begin{document}
\title{\texttt{T1} encoding draft specification}
\author{Lars Hellstr\"om}
\date{2002/07/05}
\maketitle

\begin{abstract}
  The \texttt{T1} encoding covers most\footnote{But not quite all.} 
  letters in the latin script that are used in European languages. 
  Code points 32--126 coincide with ASCII\footnote{As defined in 
  Appendix C of \emph{The \TeX book}~\cite{TeXbook}, not as defined 
  by the ANSI.} and code points 192--255 are mainly the same as in 
  the latin-1 encoding~\cite{ISO8859-1,latin-page}, but there are 
  exceptions. 
\end{abstract}

\encoding

\needsfontinstversion{1.918}

\begincomment
\section{Mandatory characters}
\endcomment

\begincomment
\subsection{Letters}
More than two thirds of the characters in the encoding are letters. 
This is a deliberate choice: \TeX's hyphenation algorithm requires 
that all characters in a word are taken from the same font, hence it 
is advantageous\footnote{Probably less so than what was thought when 
the encoding was designed, but still advantageous.} to keep as many 
letters as possible in the same font. Taking symbols from other fonts 
is less of a disadvantage.

\subsubsection{``Unaccented'' letters in slots 0--127}
\endcomment

\nextslot{25}
\setslot{dotlessi}
  \Unicode{0131}{LATIN SMALL LETTER DOTLESS I}
  \comment{A dotless i `\i', used to produce accented letters such as
     `\=\i'.}
\endsetslot

\setslot{dotlessj}
  \Unicode{F6BE}{LATIN SMALL LETTER DOTLESS J}
  \comment{A dotless j `\j', used to produce accented letters such as
     `\=\j'. The Unicode standard does not define this character, but 
     Adobe has assigned code point \texttt{U+F6BE} (which lies 
     in the private use subarea assigned by Adobe) to it.}
\endsetslot


\nextslot{65}
\setslot{A}
  \Unicode{0041}{LATIN CAPITAL LETTER A}
\endsetslot

\setslot{B}
  \Unicode{0042}{LATIN CAPITAL LETTER B}
\endsetslot

\setslot{C}
  \Unicode{0043}{LATIN CAPITAL LETTER C}
\endsetslot

\setslot{D}
  \Unicode{0044}{LATIN CAPITAL LETTER D}
\endsetslot

\setslot{E}
  \Unicode{0045}{LATIN CAPITAL LETTER E}
\endsetslot

\setslot{F}
  \Unicode{0046}{LATIN CAPITAL LETTER F}
\endsetslot

\setslot{G}
  \Unicode{0047}{LATIN CAPITAL LETTER G}
\endsetslot

\setslot{H}
  \Unicode{0048}{LATIN CAPITAL LETTER H}
\endsetslot

\setslot{I}
  \Unicode{0049}{LATIN CAPITAL LETTER I}
  \oddligature{This ligature only occurs in Dutch typography.}
     {LIG}{J}{IJ}
  \oddligature{This ligature only occurs in Dutch typography.}
     {LIG}{j}{IJ}
\endsetslot

\setslot{J}
  \Unicode{004A}{LATIN CAPITAL LETTER J}
\endsetslot

\setslot{K}
  \Unicode{004B}{LATIN CAPITAL LETTER K}
\endsetslot

\setslot{L}
  \Unicode{004C}{LATIN CAPITAL LETTER L}
\endsetslot

\setslot{M}
  \Unicode{004D}{LATIN CAPITAL LETTER M}
\endsetslot

\setslot{N}
  \Unicode{004E}{LATIN CAPITAL LETTER N}
\endsetslot

\setslot{O}
  \Unicode{004F}{LATIN CAPITAL LETTER O}
\endsetslot

\setslot{P}
  \Unicode{0050}{LATIN CAPITAL LETTER P}
\endsetslot

\setslot{Q}
  \Unicode{0051}{LATIN CAPITAL LETTER Q}
\endsetslot

\setslot{R}
  \Unicode{0052}{LATIN CAPITAL LETTER R}
\endsetslot

\setslot{S}
  \Unicode{0053}{LATIN CAPITAL LETTER S}
\endsetslot

\setslot{T}
  \Unicode{0054}{LATIN CAPITAL LETTER T}
\endsetslot

\setslot{U}
  \Unicode{0055}{LATIN CAPITAL LETTER U}
\endsetslot

\setslot{V}
  \Unicode{0056}{LATIN CAPITAL LETTER V}
\endsetslot

\setslot{W}
  \Unicode{0057}{LATIN CAPITAL LETTER W}
\endsetslot

\setslot{X}
  \Unicode{0058}{LATIN CAPITAL LETTER X}
\endsetslot

\setslot{Y}
  \Unicode{0059}{LATIN CAPITAL LETTER Y}
\endsetslot

\setslot{Z}
  \Unicode{005A}{LATIN CAPITAL LETTER Z}
\endsetslot


\nextslot{97}
\setslot{a}
  \Unicode{0061}{LATIN SMALL LETTER A}
\endsetslot

\setslot{b}
  \Unicode{0062}{LATIN SMALL LETTER B}
\endsetslot

\setslot{c}
  \Unicode{0063}{LATIN SMALL LETTER C}
\endsetslot

\setslot{d}
  \Unicode{0064}{LATIN SMALL LETTER D}
\endsetslot

\setslot{e}
  \Unicode{0065}{LATIN SMALL LETTER E}
\endsetslot

\setslot{f}
  \Unicode{0066}{LATIN SMALL LETTER F}
  \ligature{LIG}{f}{ff}
  \ligature{LIG}{i}{fi}
  \ligature{LIG}{l}{fl}
\endsetslot

\setslot{g}
  \Unicode{0067}{LATIN SMALL LETTER G}
\endsetslot

\setslot{h}
  \Unicode{0068}{LATIN SMALL LETTER H}
\endsetslot

\setslot{i}
  \Unicode{0069}{LATIN SMALL LETTER I}
  \oddligature{This ligature only occurs in Dutch typography.}
     {LIG}{j}{ij}
\endsetslot

\setslot{j}
  \Unicode{006A}{LATIN SMALL LETTER J}
\endsetslot

\setslot{k}
  \Unicode{006B}{LATIN SMALL LETTER K}
\endsetslot

\setslot{l}
  \Unicode{006C}{LATIN SMALL LETTER L}
\endsetslot

\setslot{m}
  \Unicode{006D}{LATIN SMALL LETTER M}
\endsetslot

\setslot{n}
  \Unicode{006E}{LATIN SMALL LETTER N}
\endsetslot

\setslot{o}
  \Unicode{006F}{LATIN SMALL LETTER O}
\endsetslot

\setslot{p}
  \Unicode{0070}{LATIN SMALL LETTER P}
\endsetslot

\setslot{q}
  \Unicode{0071}{LATIN SMALL LETTER Q}
\endsetslot

\setslot{r}
  \Unicode{0072}{LATIN SMALL LETTER R}
\endsetslot

\setslot{s}
  \Unicode{0073}{LATIN SMALL LETTER S}
\endsetslot

\setslot{t}
  \Unicode{0074}{LATIN SMALL LETTER T}
\endsetslot

\setslot{u}
  \Unicode{0075}{LATIN SMALL LETTER U}
\endsetslot

\setslot{v}
  \Unicode{0076}{LATIN SMALL LETTER V}
\endsetslot

\setslot{w}
  \Unicode{0077}{LATIN SMALL LETTER W}
\endsetslot

\setslot{x}
  \Unicode{0078}{LATIN SMALL LETTER X}
\endsetslot

\setslot{y}
  \Unicode{0079}{LATIN SMALL LETTER Y}
\endsetslot

\setslot{z}
  \Unicode{007A}{LATIN SMALL LETTER Z}
\endsetslot


\begincomment
\subsubsection{Mainly East-European accented letters 
  in slots 128--191}
\endcomment

\nextslot{128}
\setslot{Abreve}
  \Unicode{0102}{LATIN CAPITAL LETTER A WITH BREVE}
\endsetslot

\setslot{Aogonek}
  \Unicode{0104}{LATIN CAPITAL LETTER A WITH OGONEK}
\endsetslot  

\setslot{Cacute}
  \Unicode{0106}{LATIN CAPITAL LETTER C WITH ACUTE}
\endsetslot

\setslot{Ccaron}
  \Unicode{010C}{LATIN CAPITAL LETTER C WITH CARON}
\endsetslot

\setslot{Dcaron}
  \Unicode{010E}{LATIN CAPITAL LETTER D WITH CARON}
\endsetslot

\setslot{Ecaron}
  \Unicode{011A}{LATIN CAPITAL LETTER E WITH CARON}
\endsetslot

\setslot{Eogonek}
  \Unicode{0118}{LATIN CAPITAL LETTER E WITH OGONEK}
\endsetslot

\setslot{Gbreve}
  \Unicode{011E}{LATIN CAPITAL LETTER G WITH BREVE}
\endsetslot

\setslot{Lacute}
  \Unicode{0139}{LATIN CAPITAL LETTER L WITH ACUTE}
\endsetslot

\setslot{Lcaron}
  \Unicode{013D}{LATIN CAPITAL LETTER L WITH CARON}
  \comment{The normal glyph for this character consists of a capital 
    L and a right single quote, but the underlying accent is a caron. 
    The glyph name \texttt{Lquoteright} is not uncommon, but 
    \cite{AGL} uses \texttt{Lcaron}.}
\endsetslot

\setslot{Lslash}
  \Unicode{0141}{LATIN CAPITAL LETTER L WITH STROKE}
  \comment{The letter `\L'.}
\endsetslot

\setslot{Nacute}
  \Unicode{0143}{LATIN CAPITAL LETTER N WITH ACUTE}
\endsetslot

\setslot{Ncaron}
  \Unicode{0147}{LATIN CAPITAL LETTER N WITH CARON}
\endsetslot

\setslot{Eng}
  \Unicode{014A}{LATIN CAPITAL LETTER ENG}
\endsetslot

\setslot{Ohungarumlaut}
  \Unicode{0150}{LATIN CAPITAL LETTER O WITH DOUBLE ACUTE}
  \comment{The letter `\H{O}'.}
\endsetslot

\setslot{Racute}
  \Unicode{0154}{LATIN CAPITAL LETTER R WITH ACUTE}
\endsetslot

\setslot{Rcaron}
  \Unicode{0158}{LATIN CAPITAL LETTER R WITH CARON}
\endsetslot

\setslot{Sacute}
  \Unicode{015A}{LATIN CAPITAL LETTER S WITH ACUTE}
\endsetslot

\setslot{Scaron}
  \Unicode{0160}{LATIN CAPITAL LETTER S WITH CARON}
\endsetslot

\setslot{Scedilla}
  \Unicode{015E}{LATIN CAPITAL LETTER S WITH CEDILLA}
  \comment{In Romanian, character \textunicode{0218}{latin 
     capital letter s with comma below} is preferred, but that 
     wasn't known when this encoding was designed.}
\endsetslot

\setslot{Tcaron}
  \Unicode{0164}{LATIN CAPITAL LETTER T WITH CARON}
\endsetslot

\setslot{Tcommaaccent}
  \Unicode{021A}{LATIN CAPITAL LETTER T WITH COMMA BELOW}
\endsetslot

\setslot{Uhungarumlaut}
  \Unicode{0170}{LATIN CAPITAL LETTER U WITH DOUBLE ACUTE}
  \comment{The letter `\H{U}'.}
\endsetslot

\setslot{Uring}
  \Unicode{016E}{LATIN CAPITAL LETTER U WITH RING ABOVE}
\endsetslot

\setslot{Ydieresis}
  \Unicode{0178}{LATIN CAPITAL LETTER Y WITH DIAERESIS}
\endsetslot

\setslot{Zacute}
  \Unicode{0179}{LATIN CAPITAL LETTER Z WITH ACUTE}
\endsetslot

\setslot{Zcaron}
  \Unicode{017D}{LATIN CAPITAL LETTER Z WITH CARON}
\endsetslot

\setslot{Zdotaccent}
  \Unicode{017B}{LATIN CAPITAL LETTER Z WITH DOT ABOVE}
\endsetslot

\skipslots{1}
\setslot{Idotaccent}
  \Unicode{0130}{LATIN CAPITAL LETTER I WITH DOT ABOVE}
  \comment{This character's |\lccode| value points to slot 105 
     (\texttt{i}), as does that of slot 73 (\texttt{I}).}
\endsetslot

\setslot{dcroat}
  \Unicode{0111}{LATIN SMALL LETTER D WITH STROKE}
\endsetslot


\nextslot{160}
\setslot{abreve}
  \Unicode{0103}{LATIN SMALL LETTER A WITH BREVE}
\endsetslot

\setslot{aogonek}
  \Unicode{0105}{LATIN SMALL LETTER A WITH OGONEK}
\endsetslot

\setslot{cacute}
  \Unicode{0107}{LATIN SMALL LETTER C WITH ACUTE}
\endsetslot

\setslot{ccaron}
  \Unicode{010D}{LATIN SMALL LETTER C WITH CARON}
\endsetslot

\setslot{dcaron}
  \Unicode{010F}{LATIN SMALL LETTER D WITH CARON}
  \comment{The normal glyph for this character consists of a 
    lower case d and a right single quote, but the underlying 
    accent is a caron.}
\endsetslot

\setslot{ecaron}
  \Unicode{011B}{LATIN SMALL LETTER E WITH CARON}
\endsetslot

\setslot{eogonek}
  \Unicode{0119}{LATIN SMALL LETTER E WITH OGONEK}
\endsetslot

\setslot{gbreve}
  \Unicode{011F}{LATIN SMALL LETTER G WITH BREVE}
\endsetslot

\setslot{lacute}
  \Unicode{013A}{LATIN SMALL LETTER L WITH ACUTE}
\endsetslot

\setslot{lcaron}
  \Unicode{013E}{LATIN SMALL LETTER L WITH CARON}
  \comment{The normal glyph for this character consists of a 
    lower case l and a right single quote, but the underlying 
    accent is a caron. The glyph name \texttt{lquoteright} is 
    not uncommon, but \cite{AGL} uses \texttt{lcaron}.}
\endsetslot

\setslot{lslash}
  \Unicode{0142}{LATIN SMALL LETTER L WITH STROKE}
\endsetslot

\setslot{nacute}
  \Unicode{0144}{LATIN SMALL LETTER N WITH ACUTE}
\endsetslot

\setslot{ncaron}
  \Unicode{0148}{LATIN SMALL LETTER N WITH CARON}
\endsetslot

\setslot{eng}
  \Unicode{014B}{LATIN SMALL LETTER ENG}
\endsetslot

\setslot{ohungarumlaut}
  \Unicode{0151}{LATIN SMALL LETTER O WITH DOUBLE ACUTE}
  \comment{The letter `\H{o}'.}
\endsetslot

\setslot{racute}
  \Unicode{0155}{LATIN SMALL LETTER R WITH ACUTE}
\endsetslot

\setslot{rcaron}
  \Unicode{0159}{LATIN SMALL LETTER R WITH CARON}
\endsetslot

\setslot{sacute}
  \Unicode{015B}{LATIN SMALL LETTER S WITH ACUTE}
\endsetslot

\setslot{scaron}
  \Unicode{0161}{LATIN SMALL LETTER S WITH CARON}
\endsetslot

\setslot{scedilla}
  \Unicode{015F}{LATIN SMALL LETTER S WITH CEDILLA}
  \comment{In Romanian, character \textunicode{0219}{latin 
     small letter s with comma below} is preferred, but that 
     wasn't known when this encoding was designed.}
\endsetslot

\setslot{tcaron}
  \Unicode{0165}{LATIN SMALL LETTER T WITH CARON}
  \comment{The normal glyph for this character consists of a 
    lower case t and a right single quote, but the underlying 
    accent is a caron.}
\endsetslot

\setslot{tcommaaccent}
  \Unicode{021B}{LATIN SMALL LETTER T WITH COMMA BELOW}
\endsetslot

\setslot{uhungarumlaut}
  \Unicode{0171}{LATIN SMALL LETTER U WITH DOUBLE ACUTE}
\endsetslot

\setslot{uring}
  \Unicode{016F}{LATIN SMALL LETTER U WITH RING ABOVE}
\endsetslot

\setslot{ydieresis}
  \Unicode{00FF}{LATIN SMALL LETTER Y WITH DIAERESIS}
\endsetslot

\setslot{zacute}
  \Unicode{017A}{LATIN SMALL LETTER Z WITH ACUTE}
\endsetslot

\setslot{zcaron}
  \Unicode{017E}{LATIN SMALL LETTER Z WITH CARON}
\endsetslot

\setslot{zdotaccent}
  \Unicode{017C}{LATIN SMALL LETTER Z WITH DOT ABOVE}
\endsetslot


\begincomment
\subsubsection{Mainly West-European accented letters in slots 192--255}
\endcomment

\nextslot{192}
\setslot{Agrave}
  \Unicode{00C0}{LATIN CAPITAL LETTER A WITH GRAVE}
\endsetslot

\setslot{Aacute}
  \Unicode{00C1}{LATIN CAPITAL LETTER A WITH ACUTE}
\endsetslot

\setslot{Acircumflex}
  \Unicode{00C2}{LATIN CAPITAL LETTER A WITH CIRCUMFLEX}
\endsetslot

\setslot{Atilde}
  \Unicode{00C3}{LATIN CAPITAL LETTER A WITH TILDE}
\endsetslot

\setslot{Adieresis}
  \Unicode{00C4}{LATIN CAPITAL LETTER A WITH DIAERESIS}
\endsetslot

\setslot{Aring}
  \Unicode{00C5}{LATIN CAPITAL LETTER A WITH RING ABOVE}
\endsetslot

\setslot{AE}
  \Unicode{00C6}{LATIN CAPITAL LETTER AE}
\endsetslot

\setslot{Ccedilla}
  \Unicode{00C7}{LATIN CAPITAL LETTER C WITH CEDILLA}
\endsetslot

\setslot{Egrave}
  \Unicode{00C8}{LATIN CAPITAL LETTER E WITH GRAVE}
\endsetslot

\setslot{Eacute}
  \Unicode{00C9}{LATIN CAPITAL LETTER E WITH ACUTE}
\endsetslot

\setslot{Ecircumflex}
  \Unicode{00CA}{LATIN CAPITAL LETTER E WITH CIRCUMFLEX}
\endsetslot

\setslot{Edieresis}
  \Unicode{00CB}{LATIN CAPITAL LETTER E WITH DIAERESIS}
\endsetslot

\setslot{Igrave}
  \Unicode{00CC}{LATIN CAPITAL LETTER I WITH GRAVE}
\endsetslot

\setslot{Iacute}
  \Unicode{00CD}{LATIN CAPITAL LETTER I WITH ACUTE}
\endsetslot

\setslot{Icircumflex}
  \Unicode{00CE}{LATIN CAPITAL LETTER I WITH CIRCUMFLEX}
\endsetslot

\setslot{Idieresis}
  \Unicode{00CF}{LATIN CAPITAL LETTER I WITH DIAERESIS}
\endsetslot

\setslot{Eth}
  \Unicode{00D0}{LATIN CAPITAL LETTER ETH}
  \Unicode{0110}{LATIN CAPITAL LETTER D WITH STROKE}
  \comment{This slot is being used to represent two different 
    letters whose capital forms are identical. The |\lccode| value 
    points to slot \ref{eth}.} 
\endsetslot

\setslot{Ntilde}
  \Unicode{00D1}{LATIN CAPITAL LETTER N WITH TILDE}
\endsetslot

\setslot{Ograve}
  \Unicode{00D2}{LATIN CAPITAL LETTER O WITH GRAVE}
\endsetslot

\setslot{Oacute}
  \Unicode{00D3}{LATIN CAPITAL LETTER O WITH ACUTE}
\endsetslot

\setslot{Ocircumflex}
  \Unicode{00D4}{LATIN CAPITAL LETTER O WITH CIRCUMFLEX}
\endsetslot

\setslot{Otilde}
  \Unicode{00D5}{LATIN CAPITAL LETTER O WITH TILDE}
\endsetslot

\setslot{Odieresis}
  \Unicode{00D6}{LATIN CAPITAL LETTER O WITH DIAERESIS}
\endsetslot

\setslot{OE}
  \Unicode{0152}{LATIN CAPITAL LIGATURE OE}
  \comment{This is a single letter, and should not be faked with `OE'.}
\endsetslot

\setslot{Oslash}
  \Unicode{00D8}{LATIN CAPITAL LETTER O WITH STROKE}
\endsetslot

\setslot{Ugrave}
  \Unicode{00D9}{LATIN CAPITAL LETTER U WITH GRAVE}
\endsetslot

\setslot{Uacute}
  \Unicode{00DA}{LATIN CAPITAL LETTER U WITH ACUTE}
\endsetslot

\setslot{Ucircumflex}
  \Unicode{00DB}{LATIN CAPITAL LETTER U WITH CIRCUMFLEX}
\endsetslot

\setslot{Udieresis}
  \Unicode{00DC}{LATIN CAPITAL LETTER U WITH DIAERESIS}
\endsetslot

\setslot{Yacute}
  \Unicode{00DD}{LATIN CAPITAL LETTER Y WITH ACUTE}
\endsetslot

\setslot{Thorn}
  \Unicode{00DE}{LATIN CAPITAL LETTER THORN}
\endsetslot

\setslot{SS}
  \comment{This is an ``uppercased'' sharp s (`\ss') which always 
    looks exactly like two S's next to each other. In a monowidth 
    font it should be two letters wide. There are other characters 
    which could have made better use of this slot; the only function 
    of this slot which could not have been handled using macros is 
    that |\SS| and |SS| can have different hyphenation.}
\endsetslot

\setslot{agrave}
  \Unicode{00E0}{LATIN SMALL LETTER A WITH GRAVE}
\endsetslot

\setslot{aacute}
  \Unicode{00E1}{LATIN SMALL LETTER A WITH ACUTE}
\endsetslot

\setslot{acircumflex}
  \Unicode{00E2}{LATIN SMALL LETTER A WITH CIRCUMFLEX}
\endsetslot

\setslot{atilde}
  \Unicode{00E3}{LATIN SMALL LETTER A WITH TILDE}
\endsetslot

\setslot{adieresis}
  \Unicode{00E4}{LATIN SMALL LETTER A WITH DIAERESIS}
\endsetslot

\setslot{aring}
  \Unicode{00E5}{LATIN SMALL LETTER A WITH RING ABOVE}
\endsetslot

\setslot{ae}
  \Unicode{00E6}{LATIN SMALL LETTER AE}
\endsetslot

\setslot{ccedilla}
  \Unicode{00E7}{LATIN SMALL LETTER C WITH CEDILLA}
\endsetslot

\setslot{egrave}
  \Unicode{00E8}{LATIN SMALL LETTER E WITH GRAVE}
\endsetslot

\setslot{eacute}
  \Unicode{00E9}{LATIN SMALL LETTER E WITH ACUTE}
\endsetslot

\setslot{ecircumflex}
  \Unicode{00EA}{LATIN SMALL LETTER E WITH CIRCUMFLEX}
\endsetslot

\setslot{edieresis}
  \Unicode{00EB}{LATIN SMALL LETTER E WITH DIAERESIS}
\endsetslot

\setslot{igrave}
  \Unicode{00EC}{LATIN SMALL LETTER I WITH GRAVE}
\endsetslot

\setslot{iacute}
  \Unicode{00ED}{LATIN SMALL LETTER I WITH ACUTE}
\endsetslot

\setslot{icircumflex}
  \Unicode{00EE}{LATIN SMALL LETTER I WITH CIRCUMFLEX}
\endsetslot

\setslot{idieresis}
  \Unicode{00EF}{LATIN SMALL LETTER I WITH DIAERESIS}
\endsetslot

\setslot{eth}
  \Unicode{00F0}{LATIN SMALL LETTER ETH}
  \label{eth}
\endsetslot

\setslot{ntilde}
  \Unicode{00F1}{LATIN SMALL LETTER N WITH TILDE}
\endsetslot

\setslot{ograve}
  \Unicode{00F2}{LATIN SMALL LETTER O WITH GRAVE}
\endsetslot

\setslot{oacute}
  \Unicode{00F3}{LATIN SMALL LETTER O WITH ACUTE}
\endsetslot

\setslot{ocircumflex}
  \Unicode{00F4}{LATIN SMALL LETTER O WITH CIRCUMFLEX}
\endsetslot

\setslot{otilde}
  \Unicode{00F5}{LATIN SMALL LETTER O WITH TILDE}
\endsetslot

\setslot{odieresis}
  \Unicode{00F6}{LATIN SMALL LETTER O WITH DIAERESIS}
\endsetslot

\setslot{oe}
  \Unicode{0153}{LATIN SMALL LIGATURE OE}
  \comment{This is a single letter, and should not be faked with `oe'.}
\endsetslot

\setslot{oslash}
  \Unicode{00F8}{LATIN SMALL LETTER O WITH STROKE}
\endsetslot

\setslot{ugrave}
  \Unicode{00F9}{LATIN SMALL LETTER U WITH GRAVE}
\endsetslot

\setslot{uacute}
  \Unicode{00FA}{LATIN SMALL LETTER U WITH ACUTE}
\endsetslot

\setslot{ucircumflex}
  \Unicode{00FB}{LATIN SMALL LETTER U WITH CIRCUMFLEX}
\endsetslot

\setslot{udieresis}
  \Unicode{00FC}{LATIN SMALL LETTER U WITH DIAERESIS}
\endsetslot

\setslot{yacute}
  \Unicode{00FD}{LATIN SMALL LETTER Y WITH ACUTE}
\endsetslot

\setslot{thorn}
  \Unicode{00FE}{LATIN SMALL LETTER THORN}
\endsetslot

\setslot{germandbls}
  \Unicode{00DF}{LATIN SMALL LETTER SHARP S}
\endsetslot


\begincomment
\subsection{Accents}
The Unicode equivalents of the accents are taken to be the combining 
forms of the accents found in code point \texttt{U+0300} and upwards. 
The reasons for this are (i) that they are primarily used with the 
|\accent| primitive, i.e., as combining characters, (ii) that some 
of them (e.g. \texttt{tilde}) have non-combining counterparts 
elsewhere in the encoding, and (iii) that they are not primarily 
phonetic marks.
\endcomment

\nextslot{0}
\setslot{grave}
   \Unicode{0300}{COMBINING GRAVE ACCENT}
\endsetslot

\setslot{acute}
  \Unicode{0301}{COMBINING ACUTE ACCENT}
\endsetslot

\setslot{circumflex}
  \Unicode{0302}{COMBINING CIRCUMFLEX ACCENT}
\endsetslot

\setslot{tilde}
  \Unicode{0303}{COMBINING TILDE}
\endsetslot

\setslot{dieresis}
  \Unicode{0308}{COMBINING DIAERESIS}
\endsetslot

\setslot{hungarumlaut}
  \Unicode{030B}{COMBINING DOUBLE ACUTE ACCENT}
  \comment{The long Hungarian umlaut `\H{}'.}
\endsetslot

\setslot{ring}
  \Unicode{030A}{COMBINING RING ABOVE}
\endsetslot

\setslot{caron}
  \Unicode{030C}{COMBINING CARON}
  \comment{The caron or h\'a\v cek accent `\v{}'.}
\endsetslot

\setslot{breve}
  \Unicode{0306}{COMBINING BREVE}
\endsetslot

\setslot{macron}
  \Unicode{0304}{COMBINING MACRON}
\endsetslot

\setslot{dotaccent}
  \Unicode{0307}{COMBINING DOT ABOVE}
\endsetslot

\setslot{cedilla}
  \Unicode{0327}{COMBINING CEDILLA}
\endsetslot

\setslot{ogonek}
  \Unicode{0328}{COMBINING OGONEK}
\endsetslot


\begincomment
\subsection{Digits}
\endcomment

\nextslot{48}
\setslot{zero}
  \Unicode{0030}{DIGIT ZERO}
\endsetslot

\setslot{one}
  \Unicode{0031}{DIGIT ONE}
\endsetslot

\setslot{two}
  \Unicode{0032}{DIGIT TWO}
\endsetslot

\setslot{three}
  \Unicode{0033}{DIGIT THREE}
\endsetslot

\setslot{four}
  \Unicode{0034}{DIGIT FOUR}
\endsetslot

\setslot{five}
  \Unicode{0035}{DIGIT FIVE}
\endsetslot

\setslot{six}
  \Unicode{0036}{DIGIT SIX}
\endsetslot

\setslot{seven}
  \Unicode{0037}{DIGIT SEVEN}
\endsetslot

\setslot{eight}
  \Unicode{0038}{DIGIT EIGHT}
\endsetslot

\setslot{nine}
  \Unicode{0039}{DIGIT NINE}
\endsetslot


\begincomment
\subsection{Symbols and punctuation}
\endcomment

\nextslot{13}
\setslot{quotesinglbase}
  \Unicode{201A}{SINGLE LOW-9 QUOTATION MARK}
\endsetslot

\setslot{guilsinglleft}
  \Unicode{2039}{SINGLE LEFT-POINTING ANGLE QUOTATION MARK}
  \comment{In French typography this is an opening quotation mark, 
    but in German typography it is a closing quotation mark. The 
    character should kern well in both cases.}
\endsetslot

\setslot{guilsinglright}
  \Unicode{203A}{SINGLE RIGHT-POINTING ANGLE QUOTATION MARK}
  \comment{In French typography this is a closing quotation mark, 
    but in German typography it is an opening quotation mark. The 
    character should kern well in both cases.}
\endsetslot

\setslot{quotedblleft}
  \Unicode{201C}{LEFT DOUBLE QUOTATION MARK}
\endsetslot

\setslot{quotedblright}
  \Unicode{201D}{RIGHT DOUBLE QUOTATION MARK}
  \comment{In English typography this quotation mark is always 
    closing, but in Swedish typography it is also an opening 
    quotation mark. The character should kern well in both cases.}
\endsetslot

\setslot{quotedblbase}
  \Unicode{201E}{DOUBLE LOW-9 QUOTATION MARK}
\endsetslot

\setslot{guillemotleft}
  \Unicode{00AB}{LEFT-POINTING DOUBLE ANGLE QUOTATION MARK}
  \comment{In French typography this is an opening quotation mark, 
    but in German typography it is a closing quotation mark. The 
    character should kern well in both cases. The glyph name is 
    misspelt (it should be \texttt{guillemetleft}), but this 
    incorrect name is \emph{de facto} the glyph name used.}
\endsetslot

\setslot{guillemotright}
  \Unicode{00BB}{RIGHT-POINTING DOUBLE ANGLE QUOTATION MARK}
  \comment{In French typography this is a closing quotation mark, 
    but in German typography it is an opening quotation mark. The 
    character should kern well in both cases. The glyph name is 
    misspelt (it should be \texttt{guillemetright}), but this 
    incorrect name is \emph{de facto} the glyph name used.}
\endsetslot

\setslot{endash}
  \Unicode{2013}{EN DASH}
  \label{endash}
  \Ligature{LIG}{hyphen}{emdash}
\endsetslot

\setslot{emdash}
  \Unicode{2014}{EM DASH}
  \comment{In a monowidth font this character is preferably given the 
     width of two normal characters.}
\endsetslot

\nextslot{32}
\setslot{visiblespace}
  \Unicode{2423}{OPEN BOX}
  \comment{A visible space glyph `\textvisiblespace'.}
\endsetslot

\setslot{exclam}
  \Unicode{0021}{EXCLAMATION MARK}
  \Ligature{LIG}{quoteleft}{exclamdown}
\endsetslot

\setslot{quotedbl}
  \Unicode{0022}{QUOTATION MARK}
  \comment{The `neutral' double quotation mark, included for use in 
    monowidth fonts, or for setting computer programs.}
\endsetslot

\setslot{numbersign}
  \Unicode{0023}{NUMBER SIGN}
\endsetslot

\setslot{dollar}
  \Unicode{0024}{DOLLAR SIGN}
\endsetslot

\setslot{percent}
  \Unicode{0025}{PERCENT SIGN}
\endsetslot

\setslot{ampersand}
  \Unicode{0026}{AMPERSAND}
\endsetslot

\setslot{quoteright}
  \Unicode{2019}{RIGHT SINGLE QUOTATION MARK}
  \Ligature{LIG}{quoteright}{quotedblright}
\endsetslot

\setslot{parenleft}
  \Unicode{0028}{LEFT PARENTHESIS}
\endsetslot

\setslot{parenright}
  \Unicode{0029}{RIGHT PARENTHESIS}
\endsetslot

\setslot{asterisk}
  \Unicode{002A}{ASTERISK}
\endsetslot

\setslot{plus}
  \Unicode{002B}{PLUS SIGN}
\endsetslot

\setslot{comma}
  \Unicode{002C}{COMMA}
  \Ligature{LIG}{comma}{quotedblbase}
\endsetslot

\setslot{hyphen}
  \Unicode{002D}{HYPHEN-MINUS}
  \Ligature{LIG}{hyphen}{endash}
  \Ligature{LIG}{hyphenchar}{hyphenchar}
  \comment{See also slot \ref{hyphenchar}.}
  \label{hyphen}
\endsetslot

\setslot{period}
  \Unicode{002E}{FULL STOP}
\endsetslot

\setslot{slash}
  \Unicode{002F}{SOLIDUS}
\endsetslot

\skipslots{10}
\setslot{colon}
  \Unicode{003A}{COLON}
\endsetslot

\setslot{semicolon}
  \Unicode{003B}{SEMICOLON}
\endsetslot

\setslot{less}
  \Unicode{003C}{LESS-THAN SIGN}
  \Ligature{LIG}{less}{guillemotleft}
\endsetslot

\setslot{equal}
  \Unicode{003D}{EQUALS SIGN}
\endsetslot

\setslot{greater}
  \Unicode{003E}{GREATER-THAN SIGN}
  \Ligature{LIG}{greater}{guillemotright}
\endsetslot

\setslot{question}
  \Unicode{003F}{QUESTION MARK}
  \Ligature{LIG}{quoteleft}{questiondown}
\endsetslot

\setslot{at}
  \Unicode{0040}{COMMERCIAL AT}
\endsetslot

\nextslot{91}
\setslot{bracketleft}
  \Unicode{005B}{LEFT SQUARE BRACKET}
\endsetslot

\setslot{backslash}
  \Unicode{005C}{REVERSE SOLIDUS}
\endsetslot

\setslot{bracketright}
  \Unicode{005D}{RIGHT SQUARE BRACKET}
\endsetslot

\setslot{asciicircum}
  \Unicode{005E}{CIRCUMFLEX ACCENT}
  \comment{The ASCII upward-pointing arrow head `\textasciicircum'.
     This is included for compatibility with typewriter fonts used
     for computer listings.}
\endsetslot

\setslot{underscore}
  \Unicode{005F}{LOW LINE}
  \comment{The ASCII underline character `\textunderscore', usually
     set on the baseline. This is included for compatibility with 
     typewriter fonts used for computer listings.}
\endsetslot

\setslot{quoteleft}
   \Unicode{2018}{LEFT SINGLE QUOTATION MARK}
   \Ligature{LIG}{quoteleft}{quotedblleft}
\endsetslot

\nextslot{123}
\setslot{braceleft}
  \Unicode{007B}{LEFT CURLY BRACKET}
\endsetslot

\setslot{bar}
  \Unicode{007C}{VERTICAL LINE}
  \comment{The ASCII vertical bar `\textbar'.
    This is included for compatibility with typewriter fonts used
    for computer listings.}
\endsetslot

\setslot{braceright}
  \Unicode{007D}{RIGHT CURLY BRACKET}
\endsetslot

\setslot{asciitilde}
  \Unicode{007E}{TILDE}
  \comment{The ASCII tilde `\textasciitilde'.
     This is included for compatibility with typewriter fonts used
     for computer listings.}
\endsetslot

\nextslot{159}
\setslot{section}
  \Unicode{00A7}{SECTION SIGN}
\endsetslot

\nextslot{189}
\setslot{exclamdown}
  \Unicode{00A1}{INVERTED EXCLAMATION MARK}
\endsetslot

\setslot{questiondown}
  \Unicode{00BF}{INVERTED QUESTION MARK}
\endsetslot

\setslot{sterling}
  \Unicode{00A3}{POUND SIGN}
\endsetslot



\begincomment
\subsection{Miscellanea}
\endcomment

\nextslot{23}
\setslot{compwordmark}
  \Unicode{200C}{ZERO WIDTH NON-JOINER}
  \comment{An invisible glyph, with zero width and depth, but the
     height of lower case letters without ascenders.
     It is used to stop ligaturing in words like `shelf{}ful'. 
     It is possible that this character should be considered a 
     letter (and that hyphenation patterns should be designed to 
     include it), but since its |\lccode| is 0, \TeX's hyphenation 
     mechanism considers it to be a nonletter which ends the 
     hyphenatable part of a word.}
\endsetslot

\setslot{perthousandzero}
  \comment{A glyph which is placed after `\%' to produce a
    `per-thousand', or twice to produce `per-ten-thousand'.
    Your guess is as good as mine as to what this glyph should look
    like in a monowidth font. Since most fonts don't include this 
    glyph anyway, its use is discouraged.}
\endsetslot

\nextslot{127}
\setslot{hyphenchar}
  \label{hyphenchar}
  \comment{This character is provided as a discretionary hyphen 
    symbol and may only appear at the end of a line, since it is often 
    hanging out of the character box, but apart from that it is almost 
    always the same as the \texttt{hyphen} character. Since \LaTeX\ 
    sets the |\hyphenchar| of \texttt{T1} fonts to slot \ref{hyphen} 
    rather than this slot, this feature is usually not used.}
\endsetslot



\begincomment
\section{Usual characters}
The following characters are only accessed through ligatures and can 
therefore be replaced by others or completely left out if the 
ligature programs are modified accordingly.
\endcomment

\nextslot{27}
\setslot{ff}
  \Unicode{FB00}{LATIN SMALL LIGATURE FF}
  \comment{This glyph should be two characters wide in a monowidth 
    font.}
  \ligature{LIG}{i}{ffi}
  \ligature{LIG}{l}{ffl}
\endsetslot

\setslot{fi}
  \Unicode{FB01}{LATIN SMALL LIGATURE FI}
  \comment{This glyph should be two characters wide in a monowidth 
    font.}
\endsetslot

\setslot{fl}
  \Unicode{FB02}{LATIN SMALL LIGATURE FL}
  \comment{This glyph should be two characters wide in a monowidth 
    font.}
\endsetslot

\setslot{ffi}
  \Unicode{FB03}{LATIN SMALL LIGATURE FFI}
  \comment{This glyph should be three characters wide in a monowidth 
    font.}
\endsetslot

\setslot{ffl}
  \Unicode{FB04}{LATIN SMALL LIGATURE FFL}
  \comment{This glyph should be three characters wide in a monowidth 
    font.}
\endsetslot

\nextslot{156}
\setslot{IJ}
  \Unicode{0132}{LATIN CAPITAL LIGATURE IJ}
  \comment{This is a single letter, and in a monowidth font should 
    ideally be one letter wide.}
\endsetslot

\nextslot{188}
\setslot{ij}
  \Unicode{0133}{LATIN SMALL LIGATURE IJ}
  \comment{This is a single letter, and in a monowidth font should 
    ideally be one letter wide.}
\endsetslot


\begincomment
\section{Fontdimens}
\endcomment

\setfontdimen{1}{italicslant}    % italic slant
\setfontdimen{2}{interword}      % interword space
\setfontdimen{3}{stretchword}    % interword stretch
\setfontdimen{4}{shrinkword}     % interword shrink
\setfontdimen{5}{xheight}        % x-height
\setfontdimen{6}{quad}           % quad
\setfontdimen{7}{extraspace}     % extra space after .
\setfontdimen{8}{capheight}      % cap height
\setfontdimen{9}{ascender}       % ascender
\setfontdimen{10}{acccapheight}  % accented cap height
\setfontdimen{11}{descender}     % descender's depth
\setfontdimen{12}{maxheight}     % max height
\setfontdimen{13}{maxdepth}      % max depth
\setfontdimen{14}{digitwidth}    % digit width
\setfontdimen{15}{verticalstem}  % dominant width of verical stems
\setfontdimen{16}{baselineskip}  % baselineskip


\begincomment
\section{Coding scheme}
\endcomment

\setstr{codingscheme}{EXTENDED TEX FONT ENCODING - LATIN}


\endencoding


\section{Discussion}

As the \texttt{T1} encoding is an established standard, the discussion 
of it has already been published elsewhere. [Unfortunately, I do not 
know where as it all happened long before I started using \TeX. This 
part of the document definitely needs to be improved. To begin with, I 
would like to know if the TUGboat articles whose bibliography entries 
appear in Figure~\ref{Bib-entries} are relevant for the matter. 
\begin{figure*}
\small
\begin{verbatim}
@Article{Beebe:TB11-2-171,
  author =       "Nelson Beebe",
  title =        "{Character set encoding}",
  journal =      j-TUGboat,
  volume =       "11",
  number =       "2",
  pages =        "171--175",
  month =        jun,
  year =         "1990",
  ISSN =         "0896-3207",
  bibdate =      "Fri Jun 4 18:08:09 MDT 1999",
  bibsource =    "ftp://ftp.math.utah.edu/pub/tex/bib/tugboat.bib;
                 http://www.math.utah.edu/pub/tex/bib/index-table-t.html#tugboat",
  acknowledgement = ack-bnb # " and " # ack-nhfb,
}
@Article{Bien:TB11-2-175,
  author =       "Janusz S. Bie{\'n}",
  title =        "{On standards for computer modern font extensions}",
  journal =      j-TUGboat,
  volume =       "11",
  number =       "2",
  pages =        "175--183",
  month =        jun,
  year =         "1990",
  ISSN =         "0896-3207",
  bibdate =      "Fri Jun 4 18:08:09 MDT 1999",
  bibsource =    "ftp://ftp.math.utah.edu/pub/tex/bib/tugboat.bib;
                 http://www.math.utah.edu/pub/tex/bib/index-table-t.html#tugboat",
  acknowledgement = ack-bnb # " and " # ack-nhfb,
}
@Article{Ferguson:TB11-4-514,
  author =       "Michael Ferguson",
  title =        "{Report on multilingual activities}",
  journal =      j-TUGboat,
  volume =       "11",
  number =       "4",
  pages =        "514--516",
  month =        nov,
  year =         "1990",
  ISSN =         "0896-3207",
  bibdate =      "Fri Jun 4 18:08:09 MDT 1999",
  bibsource =    "ftp://ftp.math.utah.edu/pub/tex/bib/tugboat.bib;
                 http://www.math.utah.edu/pub/tex/bib/index-table-t.html#tugboat",
  acknowledgement = ack-bnb # " and " # ack-nhfb,
}
\end{verbatim}
\normalsize

\caption{Entries in \texttt{tugboat.bib} which may describe papers 
that contain (at least part of) the discussion regarding the 
\texttt{T1} encoding}
\label{Bib-entries}
\end{figure*}
Actually reading them would be nice too, as would of course getting 
the references for whatever other papers there might be that 
constituted the discussion of the \texttt{T1} encoding. The file 
\texttt{cork.enc} in the \textit{Fontname} standard makes a cryptic 
reference to ``TTN 1(4), December 1992'', whatever that might be.]

I can however answer questions on the more immediate matter of how the 
interpretation of the established standard that this file expresses was 
constructed. It is mainly the result of a comparison between the 
file \texttt{t1.etx}~\cite{t1.etx}, the Unicode 
standard~\cite{Unicode}, and the Adobe glyph list~\cite{AGL}.

(Some concerns have been expressed about the fact that the glyph name 
listed for slot~0 is `\texttt{grave}', although that glyph name in 
\cite{AGL} corresponds to \textunicode{0060}{GRAVE ACCENT}, whereas 
\textunicode{0300}{COMBINING GRAVE ACCENT} is listed as corresponding 
to `\texttt{gravecomb}'. This is however formally irrelevant, since 
the glyph names are formally only internal labels in the encoding 
specification. `\texttt{gravecomb}' would furthermore be a more 
impractical label, since most font contains a `\texttt{grave}' glyph 
that is used as a combining accent but no `\texttt{gravecomb}' 
glyph.)


\section{Changes}

The changes made to this specification since the original 2001/06/19 
version are as follows.

2001/09/01: Corrected some typos (reported by Vladimir Volovich). /LH

2001/09/16: Added \cite{latin-page} to the bibliography. /LH

2001/09/21: Removed comment on \textunicode{2012}{FIGURE DASH} from 
slot~\ref{endash}. \cite[Sec.~6.1]{Unicode} makes quite clear that 
it's not to be used for ranges. /LH

2002/07/05: Added the Ferguson:TB11-4-514 and ``TTN~1(4)'' references 
to the discussion section. Also added remark on \texttt{grave} versus 
\texttt{gravecomb}. /LH


\begin{thebibliography}{9}
\bibitem{AGL}
   Adobe Systems Incorporated: \textit{Adobe Glyph List}, 1998;
   \textsc{http}:/\slash \texttt{partners.adobe.com}\slash 
   \texttt{asn}\slash \texttt{developer}\slash \texttt{type}\slash 
   \texttt{glyphlist.txt}
\bibitem{latin-page}
   Roman Czyborra: \textit{The ISO 8859 Alphabet Soup}, web page at
   \textsc{http:}/\slash \texttt{czyborra.com}\slash 
   \texttt{charsets}\slash \texttt{iso8859.html}, 1998.
\bibitem{ISO8859-1}
   International Organization for Standardization: 
   \textit{ISO/IEC standard 8859-1} (Information technology -- 
   8-bit single-byte coded graphic character sets --
   Part 1: Latin alphabet No. 1).
   See also~\cite{latin-page}.
\bibitem{t1.etx}
   Alan Jeffrey, Sebastian Rahtz, and Ulrik Vieth:
   \textit{The \TeX\ extended text encoding vector}, 
   version~1.801, 1998, 
   \textsc{ctan}:\discretionary{}{}{\thinspace}\texttt{fonts}\slash
   \texttt{utilities}\slash \texttt{fontinst}\slash 
   \texttt{inputs}\slash \texttt{etx}\slash \texttt{t1.etx}.
\bibitem{TeXbook}
   Donald E.\ Knuth, Duane Bibby (illustrations): 
   \textit{The \TeX book}, Ad\-di\-son--Wes\-ley, 1986; 
   ISBN~0-201-13447-0.
\bibitem{Unicode}
   The Unicode Consortium (editor), \emph{et al.}:
   \textit{The Unicode Standard, Version 3.0}, 
   Addison Wesley Longman Publisher, 2000; ISBN~0-201-61633-5.
   Most of the information in this book is also available online at 
   the Unicode consortium website, at \textsc{http}:/\slash
   \texttt{www.unicode.org}\slash \texttt{unicode}\slash 
   \texttt{uni2book}\slash \texttt{u2.html}.
\end{thebibliography}



\end{document}