\documentclass[twocolumn]{article}
\usepackage[specification]{fontdoc}[2001/06/01]

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\DeclareRobustCommand\cs[1]{\texttt{\char`\\#1}}

\showbranches

\begin{document}

\title{\texttt{OMX} encoding draft specification}
\author{Lars Hellstr\"om}
\date{2001/10/20}
\maketitle

\begin{abstract}
  The \TeX\ math extensions (\texttt{OMX}) encoding is a container for 
  most of the ``growing'' characters in the standard math set-up, but 
  that is pretty much the extent of it. Some of the characters occur 
  in ``normal size'' in other encodings; in these cases it is usually 
  a single math command that usually make use of characters in both 
  encodings.
\end{abstract}


\encoding

\begincomment
\section{Mandatory characters}

\subsection{Delimiters}
\endcomment

\nextslot{0}
\setslot{parenleftbig}
  \Unicode{0028}{LEFT PARENTHESIS}
  \nextlarger{parenleftBig}
\endsetslot

\setslot{parenrightbig}
  \Unicode{0029}{RIGHT PARENTHESIS}
  \nextlarger{parenrightBig}
\endsetslot

\setslot{bracketleftbig}
  \Unicode{005B}{LEFT SQUARE BRACKET}
  \nextlarger{bracketleftBig}
\endsetslot

\setslot{bracketrightbig}
  \Unicode{005D}{RIGHT SQUARE BRACKET}
  \nextlarger{bracketrightBig}
\endsetslot

\setslot{floorleftbig}
  \Unicode{230A}{LEFT FLOOR}
  \nextlarger{floorleftBig}
\endsetslot

\setslot{floorrightbig}
  \Unicode{230B}{RIGHT FLOOR}
  \nextlarger{floorrightBig}
\endsetslot

\setslot{ceilingleftbig}
  \Unicode{2308}{LEFT CEILING}
  \nextlarger{ceilingleftBig}
\endsetslot

\setslot{ceilingrightbig}
  \Unicode{2309}{RIGHT CEILING}
  \nextlarger{ceilingrightBig}
\endsetslot

\setslot{braceleftbig}
  \Unicode{007B}{LEFT CURLY BRACKET}
  \nextlarger{braceleftBig}
\endsetslot

\setslot{bracerightbig}
  \Unicode{007D}{RIGHT CURLY BRACKET}
  \nextlarger{bracerightBig}
\endsetslot

\setslot{angleleftbig}
  \Unicode{2329}{LEFT-POINTING ANGLE BRACKET}
  \nextlarger{angleleftBig}
\endsetslot

\setslot{anglerightbig}
  \Unicode{232A}{RIGHT-POINTING ANGLE BRACKET}
  \nextlarger{anglerightBig}
\endsetslot

\setslot{barex}
  \Unicode{007C}{VERTICAL LINE}
  \comment{This is used by the \cs{vert} command. When not accessed 
    as a delimiter, this character may be much shorter than one 
    would expect.}
  \varchar
    \varrep{barex}
  \endvarchar
\endsetslot

\setslot{bardblex}
  \Unicode{2016}{DOUBLE VERTICAL LINE}
  \comment{This is used by the \cs{Vert} command. When not accessed 
    as a delimiter, this character may be much shorter than one 
    would expect.}
  \varchar
    \varrep{bardblex}
  \endvarchar
\endsetslot

\setslot{slashbig}
  \Unicode{2215}{DIVISION SLASH}
  \comment{Although this character is normally accessed via \TeX's 
    growing delimiter mechanism, it is not used as such in formulae, 
    but as a large division slash. Since the use is unambigously for 
    division and the like, it would be inaccurate to identify this 
    character with \textunicode{002F}{SOLIDUS}.}
  \nextlarger{slashBig}
\endsetslot

\setslot{backslashbig}
  \Unicode{005C}{REVERSE SOLIDUS}
  \comment{This is \TeX's \cs{backslash} (use for ``double coset''), 
    not \cs{setminus}, and hence it is not 
    \textunicode{2216}{SET MINUS}.}
  \nextlarger{backslashBig}
\endsetslot

\nextslot{62}
\setslot{braceex}
  \Unicode{007C}{VERTICAL LINE}
  \comment{This is used by the \cs{bracevert} command.}
  \label{braceex}
  \varchar
    \varrep{braceex}
  \endvarchar
  \comment{This slot contains the repeatable part of a extensible 
    brace delimiter. In the standard set-up, the extensible recipes of 
    slots~\ref{bracelefttp}, \ref{bracerighttp}, \ref{braceleftbt}, 
    \ref{bracerightbt}, \ref{parenleftbt}, and \ref{parenrightbt} all 
    make use of this slot.}
\endsetslot

\nextslot{"42}
\setslot{parenleftex}
  \Unicode{007C}{VERTICAL LINE}
  \comment{As astonishing as it may seem, there is no command which 
    accesses this slot. The glyph is similar to that in 
    slot~\ref{braceex}, but shifted to the left.}
  \varchar
    \varrep{parenleftex}
  \endvarchar
\endsetslot

\setslot{parenrightex}
  \Unicode{007C}{VERTICAL LINE}
  \comment{As astonishing as it may seem, there is no command which 
    accesses this slot. The glyph is similar to that in 
    slot~\ref{braceex}, but shifted to the right.}
  \varchar
    \varrep{parenrightex}
  \endvarchar
\endsetslot

\nextslot{"7A}
\setslot{bracehtipdownleft}
  \comment{This is \cs{braceld}, a tip (pointing left, bending down) 
    used to build over- and underbraces.}
\endsetslot

\setslot{bracehtipdownright}
  \comment{This is \cs{bracerd}, a tip (pointing right, bending down) 
    used to build over- and underbraces.}
\endsetslot

\setslot{bracehtipupleft}
  \comment{This is \cs{bracelu}, a tip (pointing left, bending up) 
    used to build over- and underbraces.}
\endsetslot

\setslot{bracehtipupright}
  \comment{This is \cs{braceru}, a tip (pointing right, bending up) 
    used to build over- and underbraces.}
\endsetslot



\begincomment
\subsection{Text style operators}

With the exception of the integrals, all the following characters 
should be \textsc{n-ary \dots}, but some cases there are no such 
variants defined in Unicode.
\endcomment

\nextslot{"46}
\setslot{unionsqtext}
  \Unicode{2294}{SQUARE CUP}
  \nextlarger{unionsqdisplay}
\endsetslot

\skipslots{1}
\setslot{contintegraltext}
  \Unicode{222E}{CONTOUR INTEGRAL}
  \nextlarger{contintegraldisplay}
\endsetslot

\skipslots{1}
\setslot{circledottext}
  \Unicode{2299}{CIRCLED DOT OPERATOR}
  \nextlarger{circledotdisplay}
\endsetslot

\skipslots{1}
\setslot{circleplustext}
  \Unicode{2295}{CIRCLED PLUS}
  \nextlarger{circleplusdisplay}
\endsetslot

\skipslots{1}
\setslot{circlemultiplytext}
  \Unicode{2297}{CIRCLED TIMES}
  \nextlarger{circlemultiplydisplay}
\endsetslot

\skipslots{1}
\setslot{summationtext}
  \Unicode{2211}{N-ARY SUMMATION}
  \nextlarger{summationdisplay}
\endsetslot

\setslot{producttext}
  \Unicode{220F}{N-ARY PRODUCT}
  \nextlarger{productdisplay}
\endsetslot

\setslot{integraltext}
  \Unicode{222B}{INTEGRAL}
  \nextlarger{integraldisplay}
\endsetslot

\setslot{uniontext}
  \Unicode{22C3}{N-ARY UNION}
  \nextlarger{uniondisplay}
\endsetslot

\setslot{intersectiontext}
  \Unicode{22C2}{N-ARY INTERSECTION}
  \nextlarger{intersectiondisplay}
\endsetslot

\setslot{unionmultitext}
  \Unicode{228E}{MULTISET UNION}
  \nextlarger{unionmultidisplay}
\endsetslot

\setslot{logicalandtext}
  \Unicode{22C0}{N-ARY LOGICAL AND}
  \nextlarger{logicalanddisplay}
\endsetslot

\setslot{logicalortext}
  \Unicode{22C1}{N-ARY LOGICAL OR}
  \nextlarger{logicalordisplay}
\endsetslot

\skipslots{8}
\setslot{coproducttext}
  \Unicode{2210}{N-ARY COPRODUCT}
  \nextlarger{coproductdisplay}
\endsetslot



\begincomment
\subsection{Accents, arrows, and the radical}
\endcomment

\nextslot{"62}
\setslot{hatwide}
  \Unicode{0302}{COMBINING CIRCUMFLEX ACCENT}
  \nextlarger{hatwider}
\endsetslot

\skipslots{2}

\setslot{tildewide}
  \Unicode{0303}{COMBINING TILDE}
  \nextlarger{tildewider}
\endsetslot

\nextslot{"70}
\setslot{radicalbig}
  \Unicode{221A}{SQUARE ROOT}
  \nextlarger{radicalBig}
\endsetslot

\nextslot{"78}
\setslot{arrowtp}
  \Unicode{2191}{UPWARDS ARROW}
  \varchar
    \vartop{arrowtp}
    \varrep{arrowvertex}
 \endvarchar
\endsetslot

\setslot{arrowbt}
  \Unicode{2193}{DOWNWARDS ARROW}
  \varchar
    \varrep{arrowvertex}
    \varbot{arrowbt}
  \endvarchar
\endsetslot

\nextslot{"7E}
\setslot{arrowdbltp}
  \Unicode{21D1}{UPWARDS DOUBLE ARROW}
  \varchar
    \vartop{arrowdbltp}
    \varrep{arrowdblvertex}
  \endvarchar
\endsetslot

\setslot{arrowdblbt}
  \Unicode{21D3}{DOWNWARDS DOUBLE ARROW}
  \varchar
    \varrep{arrowdblvertex}
    \varbot{arrowdblbt}
  \endvarchar
\endsetslot






\begincomment
\section{Semimandatory characters}
\endcomment

\nextslot{"3A}
\setslot{braceleftbt}
  \comment{This is the \cs{lgroup} delimiter, which looks like a 
    \textunicode{007B}{LEFT CURLY BRACKET} with flat middle section. 
    There does not seem to be such a character in Unicode, but a 
    close approximation would be a narrowed 
    \textunicode{3014}{LEFT TORTOISE SHELL BRACKET}.}
  \label{braceleftbt}
  \varchar
    \vartop{bracelefttp}
    \varrep{braceex}
    \varbot{braceleftbt}
  \endvarchar
  \comment{The slot contains the curved bottom of a 
    \textunicode{007B}{LEFT CURLY BRACKET}.}
\endsetslot

\setslot{bracerightbt}
  \comment{This is the \cs{rgroup} delimiter, which looks like a 
    \textunicode{007D}{RIGHT CURLY BRACKET} with flat middle section. 
    There does not seem to be such a character in Unicode, but a 
    close approximation would be a narrowed 
    \textunicode{3015}{RIGHT TORTOISE SHELL BRACKET}.}
  \label{bracerightbt}
  \varchar
    \vartop{bracerighttp}
    \varrep{braceex}
    \varbot{bracerightbt}
  \endvarchar
  \comment{The slot contains the curved bottom of a 
    \textunicode{007D}{RIGHT CURLY BRACKET}.}
\endsetslot

\setslot{braceleftmid}
  \Unicode{007C}{VERTICAL LINE}
  \comment{This is used by the \cs{arrowvert} command.}
  \varchar
    \varrep{arrowvertex}
  \endvarchar
  \comment{The slot contains the middle part of a 
    \textunicode{007B}{LEFT CURLY BRACKET}.}
\endsetslot

\setslot{bracerightmid}
  \Unicode{2016}{DOUBLE VERTICAL LINE}
  \comment{This is used by the \cs{Arrowvert} command.}
  \varchar
    \varrep{arrowdblvertex}
  \endvarchar
  \comment{The slot contains the middle part of a 
    \textunicode{007D}{RIGHT CURLY BRACKET}.}
\endsetslot

\skipslots{1}

\setslot{arrowvertex}
  \Unicode{2195}{UP DOWN ARROW}
  \varchar
    \vartop{arrowtp}
    \varrep{arrowvertex}
    \varbot{arrowbt}
  \endvarchar
  \comment{This slot contains the repeatable middle part of a vertical 
    arrow.}
\endsetslot

\setslot{parenleftbt}
  \label{parenleftbt}
  \comment{This is the \cs{lmoustache} delimiter, whose top half is 
    like \cs{lgroup} and whose bottom half is like \cs{rgroup}.}
  \varchar
    \vartop{bracelefttp}
    \varrep{braceex}
    \varbot{bracerightbt}
  \endvarchar
  \comment{This slot contains the curved bottom of a 
    \textunicode{0028}{LEFT PARENTHESIS}.}
\endsetslot

\setslot{parenrightbt}
  \label{parenrightbt}
  \comment{This is the \cs{rmoustache} delimiter, whose top half is 
    like \cs{rgroup} and whose bottom half is like \cs{lgroup}.}
  \varchar
    \vartop{bracerighttp}
    \varrep{braceex}
    \varbot{braceleftbt}
  \endvarchar
  \comment{This slot contains the curved bottom of a 
    \textunicode{0029}{RIGHT PARENTHESIS}.}
\endsetslot

\nextslot{"77}
\setslot{arrowdblvertex}
  \Unicode{21D5}{UP DOWN DOUBLE ARROW}
  \varchar
    \vartop{arrowdbltp}
    \varbot{arrowdblbt}
    \varrep{arrowdblvertex}
  \endvarchar
  \comment{This slot contains the repeatable middle part of a vertical 
    double arrow.}
\endsetslot





\begincomment
\section{Ordinary characters}
\endcomment


\begincomment
\subsection{\texttt{Big} size delimiters}
\endcomment

\nextslot{16}
\setslot{parenleftBig}
  \Unicode{0028}{LEFT PARENTHESIS}
  \nextlarger{parenleftbigg}
\endsetslot

\setslot{parenrightBig}
  \Unicode{0029}{RIGHT PARENTHESIS}
  \nextlarger{parenrightbigg}
\endsetslot

\nextslot{46}
\setslot{slashBig}
  \Unicode{2215}{DIVISION SLASH}
  \nextlarger{slashbigg}
\endsetslot

\setslot{backslashBig}
  \Unicode{005C}{REVERSE SOLIDUS}
  \nextlarger{backslashbigg}
\endsetslot

\nextslot{"44}
\setslot{angleleftBig}
  \Unicode{2329}{LEFT-POINTING ANGLE BRACKET}
  \nextlarger{angleleftbigg}
\endsetslot

\setslot{anglerightBig}
  \Unicode{232A}{RIGHT-POINTING ANGLE BRACKET}
  \nextlarger{anglerightbigg}
\endsetslot

\nextslot{"68}
\setslot{bracketleftBig}
  \Unicode{005B}{LEFT SQUARE BRACKET}
  \nextlarger{bracketleftbigg}
\endsetslot

\setslot{bracketrightBig}
  \Unicode{005D}{RIGHT SQUARE BRACKET}
  \nextlarger{bracketrightbigg}
\endsetslot

\setslot{floorleftBig}
  \Unicode{230A}{LEFT FLOOR}
  \nextlarger{floorleftbigg}
\endsetslot

\setslot{floorrightBig}
  \Unicode{230B}{RIGHT FLOOR}
  \nextlarger{floorrightbigg}
\endsetslot

\setslot{ceilingleftBig}
  \Unicode{2308}{LEFT CEILING}
  \nextlarger{ceilingleftbigg}
\endsetslot

\setslot{ceilingrightBig}
  \Unicode{2309}{RIGHT CEILING}
  \nextlarger{ceilingrightbigg}
\endsetslot

\setslot{braceleftBig}
  \Unicode{007B}{LEFT CURLY BRACKET}
  \nextlarger{braceleftbigg}
\endsetslot

\setslot{bracerightBig}
  \Unicode{007D}{RIGHT CURLY BRACKET}
  \nextlarger{bracerightbigg}
\endsetslot





\begincomment
\subsection{\texttt{bigg} size delimiters}
\endcomment

\nextslot{18}
\setslot{parenleftbigg}
  \Unicode{0028}{LEFT PARENTHESIS}
  \nextlarger{parenleftBigg}
\endsetslot

\setslot{parenrightbigg}
  \Unicode{0029}{RIGHT PARENTHESIS}
  \nextlarger{parenrightBigg}
\endsetslot

\setslot{bracketleftbigg}
  \Unicode{005B}{LEFT SQUARE BRACKET}
  \nextlarger{bracketleftBigg}
\endsetslot

\setslot{bracketrightbigg}
  \Unicode{005D}{RIGHT SQUARE BRACKET}
  \nextlarger{bracketrightBigg}
\endsetslot

\setslot{floorleftbigg}
  \Unicode{230A}{LEFT FLOOR}
  \nextlarger{floorleftBigg}
\endsetslot

\setslot{floorrightbigg}
  \Unicode{230B}{RIGHT FLOOR}
  \nextlarger{floorrightBigg}
\endsetslot

\setslot{ceilingleftbigg}
  \Unicode{2308}{LEFT CEILING}
  \nextlarger{ceilingleftBigg}
\endsetslot

\setslot{ceilingrightbigg}
  \Unicode{2309}{RIGHT CEILING}
  \nextlarger{ceilingrightBigg}
\endsetslot

\setslot{braceleftbigg}
  \Unicode{007B}{LEFT CURLY BRACKET}
  \nextlarger{braceleftBigg}
\endsetslot

\setslot{bracerightbigg}
  \Unicode{007D}{RIGHT CURLY BRACKET}
  \nextlarger{bracerightBigg}
\endsetslot

\setslot{angleleftbigg}
  \Unicode{2329}{LEFT-POINTING ANGLE BRACKET}
  \nextlarger{angleleftBigg}
\endsetslot

\setslot{anglerightbigg}
  \Unicode{232A}{RIGHT-POINTING ANGLE BRACKET}
  \nextlarger{anglerightBigg}
\endsetslot

\setslot{slashbigg}
  \Unicode{2215}{DIVISION SLASH}
  \nextlarger{slashBigg}
\endsetslot

\setslot{backslashbigg}
  \Unicode{005C}{REVERSE SOLIDUS}
  \nextlarger{backslashBigg}
\endsetslot



\begincomment
\subsection{\texttt{Bigg} size delimiters}
\endcomment

\nextslot{32}
\setslot{parenleftBigg}
  \Unicode{0028}{LEFT PARENTHESIS}
  \nextlarger{parenlefttp}
\endsetslot

\setslot{parenrightBigg}
  \Unicode{0029}{RIGHT PARENTHESIS}
  \nextlarger{parenrighttp}
\endsetslot

\setslot{bracketleftBigg}
  \Unicode{005B}{LEFT SQUARE BRACKET}
  \nextlarger{bracketlefttp}
\endsetslot

\setslot{bracketrightBigg}
  \Unicode{005D}{RIGHT SQUARE BRACKET}
  \nextlarger{bracketrighttp}
\endsetslot

\setslot{floorleftBigg}
  \Unicode{230A}{LEFT FLOOR}
  \nextlarger{bracketleftbt}
\endsetslot

\setslot{floorrightBigg}
  \Unicode{230B}{RIGHT FLOOR}
  \nextlarger{bracketrightbt}
\endsetslot

\setslot{ceilingleftBigg}
  \Unicode{2308}{LEFT CEILING}
  \nextlarger{bracketleftex}
\endsetslot

\setslot{ceilingrightBigg}
  \Unicode{2309}{RIGHT CEILING}
  \nextlarger{bracketrightex}
\endsetslot

\setslot{braceleftBigg}
  \Unicode{007B}{LEFT CURLY BRACKET}
  \nextlarger{bracelefttp}
\endsetslot

\setslot{bracerightBigg}
  \Unicode{007D}{RIGHT CURLY BRACKET}
  \nextlarger{bracerighttp}
\endsetslot

\setslot{angleleftBigg}
  \Unicode{2329}{LEFT-POINTING ANGLE BRACKET}
\endsetslot

\setslot{anglerightBigg}
  \Unicode{232A}{RIGHT-POINTING ANGLE BRACKET}
\endsetslot

\setslot{slashBigg}
  \Unicode{2215}{DIVISION SLASH}
\endsetslot

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



\begincomment
\subsection{Extensible delimiters}
\endcomment

\nextslot{48}
\setslot{parenlefttp}
  \comment{This slot contains the curved top of a 
    \textunicode{0028}{LEFT PARENTHESIS}.}
  \varchar
    \vartop{parenlefttp}
    \varrep{parenleftex}
    \varbot{parenleftbt}
  \endvarchar
\endsetslot

\setslot{parenrighttp}
  \comment{This slot contains the curved top of a 
    \textunicode{0029}{RIGHT PARENTHESIS}.}
  \varchar
    \vartop{parenrighttp}
    \varrep{parenrightex}
    \varbot{parenrightbt}
  \endvarchar
\endsetslot

\setslot{bracketlefttp}
  \comment{This slot contains the corner top of a 
    \textunicode{005B}{LEFT SQUARE BRACKET}.}
  \varchar
    \vartop{bracketlefttp}
    \varrep{bracketleftex}
    \varbot{bracketleftbt}
  \endvarchar
\endsetslot

\setslot{bracketrighttp}
  \comment{This slot contains the corner top of a 
    \textunicode{005D}{RIGHT SQUARE BRACKET}.}
  \varchar
    \vartop{bracketrighttp}
    \varrep{bracketrightex}
    \varbot{bracketrightbt}
  \endvarchar
\endsetslot

\setslot{bracketleftbt}
  \comment{This slot contains the corner bottom of a 
    \textunicode{005B}{LEFT SQUARE BRACKET}, but it serves as the 
    final slot in the chain of larger sizes of 
    \textunicode{230A}{LEFT FLOOR}.}
  \varchar
    \varrep{bracketleftex}
    \varbot{bracketleftbt}
 \endvarchar
\endsetslot

\setslot{bracketrightbt}
  \comment{This slot contains the corner bottom of a 
    \textunicode{005D}{RIGHT SQUARE BRACKET}, but it serves as the 
    final slot in the chain of larger sizes of 
    \textunicode{230B}{RIGHT FLOOR}.}
  \varchar
    \varrep{bracketrightex}
    \varbot{bracketrightbt}
  \endvarchar
\endsetslot

\setslot{bracketleftex}
  \comment{This slot contains the repeatable middle part of a 
    \textunicode{005B}{LEFT SQUARE BRACKET}, but it serves as the 
    final slot in the chain of larger sizes of 
    \textunicode{2308}{LEFT CEILING}.}
  \varchar
    \vartop{bracketlefttp}
    \varrep{bracketleftex}
  \endvarchar
\endsetslot

\setslot{bracketrightex}
  \comment{This slot contains the repeatable middle part of a 
    \textunicode{005D}{RIGHT SQUARE BRACKET}, but it serves as the 
    final slot in the chain of larger sizes of 
    \textunicode{2309}{RIGHT CEILING}.}
  \varchar
    \vartop{bracketrighttp}
    \varrep{bracketrightex}
  \endvarchar
\endsetslot

\setslot{bracelefttp}
  \comment{This slot contains the curved top of a 
    \textunicode{007B}{LEFT CURLY BRACKET}.}
  \label{bracelefttp}
  \varchar
    \vartop{bracelefttp}
    \varrep{braceex}
    \varmid{braceleftmid}
    \varbot{braceleftbt}
  \endvarchar
\endsetslot

\setslot{bracerighttp}
  \comment{This slot contains the curved top of a 
    \textunicode{007D}{RIGHT CURLY BRACKET}.}
  \label{bracerighttp}
  \varchar
    \vartop{bracerighttp}
    \varrep{braceex}
    \varmid{bracerightmid}
    \varbot{bracerightbt}
  \endvarchar
\endsetslot




  
\begincomment
\subsection{Display style operators}
\endcomment

\nextslot{"47}
\setslot{unionsqdisplay}
  \Unicode{2294}{SQUARE CUP}
\endsetslot

\skipslots{1}
\setslot{contintegraldisplay}
  \Unicode{222E}{CONTOUR INTEGRAL}
\endsetslot

\skipslots{1}
\setslot{circledotdisplay}
  \Unicode{2299}{CIRCLED DOT OPERATOR}
\endsetslot

\skipslots{1}
\setslot{circleplusdisplay}
  \Unicode{2295}{CIRCLED PLUS}
\endsetslot

\skipslots{1}
\setslot{circlemultiplydisplay}
  \Unicode{2297}{CIRCLED TIMES}
\endsetslot

\skipslots{8}
\setslot{summationdisplay}
  \Unicode{2211}{N-ARY SUMMATION}
\endsetslot

\setslot{productdisplay}
  \Unicode{220F}{N-ARY PRODUCT}
\endsetslot

\setslot{integraldisplay}
  \Unicode{222B}{INTEGRAL}
\endsetslot

\setslot{uniondisplay}
  \Unicode{22C3}{N-ARY UNION}
\endsetslot

\setslot{intersectiondisplay}
  \Unicode{22C2}{N-ARY INTERSECTION}
\endsetslot

\setslot{unionmultidisplay}
  \Unicode{228E}{MULTISET UNION}
\endsetslot

\setslot{logicalanddisplay}
  \Unicode{22C0}{N-ARY LOGICAL AND}
\endsetslot

\setslot{logicalordisplay}
  \Unicode{22C1}{N-ARY LOGICAL OR}
\endsetslot

\skipslots{1}
\setslot{coproductdisplay}
  \Unicode{2210}{N-ARY COPRODUCT}
\endsetslot



\begincomment
\subsection{Accents}
\endcomment

\nextslot{"63}
\setslot{hatwider}
  \Unicode{0302}{COMBINING CIRCUMFLEX ACCENT}
  \nextlarger{hatwiderr}
\endsetslot

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

\skipslots{1}

\setslot{tildewider}
  \Unicode{0303}{COMBINING TILDE}
  \nextlarger{tildewiderr}
\endsetslot

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


\begincomment
\subsection{Radicals}
\endcomment

\nextslot{"71}
\setslot{radicalBig}
  \Unicode{221A}{SQUARE ROOT}
  \nextlarger{radicalbigg}
\endsetslot

\setslot{radicalbigg}
  \Unicode{221A}{SQUARE ROOT}
  \nextlarger{radicalBigg}
\endsetslot

\setslot{radicalBigg}
  \Unicode{221A}{SQUARE ROOT}
  \nextlarger{radicalbt}
\endsetslot

\setslot{radicalbt}
  \Unicode{221A}{SQUARE ROOT}
  \varchar
    \varbot{radicalbt}
    \vartop{radicaltp}
    \varrep{radicalvertex}
  \endvarchar
\endsetslot

\setslot{radicalvertex}
  \comment{This is the repeatable, vertically middle part of an 
    extensible \textunicode{221A}{SQUARE ROOT}.}
\endsetslot

\setslot{radicaltp}
  \comment{This is the top corner part of an extensible 
    \textunicode{221A}{SQUARE ROOT}.}
\endsetslot





\begincomment
\section{Fontdimens and codingscheme}

\texttt{OMX} fonts have the necessary fontdimens to serve as a math 
group 3 font.
\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}{defaultrulethickness} % default rule thickness
\setfontdimen{9}{bigopspacing1}        % bigopspacing 1
\setfontdimen{10}{bigopspacing2}       % bigopspacing 2
\setfontdimen{11}{bigopspacing3}       % bigopspacing 3
\setfontdimen{12}{bigopspacing4}       % bigopspacing 4
\setfontdimen{13}{bigopspacing5}       % bigopspacing 5

\setstr{codingscheme}{TEX MATH EXTENSION}





\endencoding


\section{Discussion}



\end{document}