CBS-KaTeX

% cbs-katex.sty

% \SHADE{MATH} can be defined to produce a shaded background to highlight
% inline MATH in running text:

\newcommand{\SHADE}[1]{#1}

% \KEY{text}, \STRING{text}, \ATOM{text}, \LEX{text} can be used in text or math mode:

\newcommand{\KEY}[1]{\textsf{\textit{\STYLE{Key}{#1}}}}
\newcommand{\STRING}[1]{\textsf{``\texttt{#1}''}}
\newcommand{\ATOM}[1]{\textsf{`\texttt{#1}'}}
\newcommand{\LEX}[1]{\textsf{\STYLE{Key}{`}\texttt{#1}\STYLE{Key}{'}}}

% The following commands produce ASCII characters that are treated specially by LaTeX:

\newcommand{\HASH}{\char`\#}
\newcommand{\DOLLAR}{\char`\$}
\newcommand{\PERCENT}{\char`\%}
\newcommand{\AMPERSAND}{\char`\&}
\newcommand{\APOSTROPHE}{\char`\'}
\newcommand{\BACKSLASH}{\char`\\}
\newcommand{\CARET}{\char`\^}
\newcommand{\UNDERSCORE}{\char`\_}
\newcommand{\GRAVE}{\char`\`}
\newcommand{\LEFTBRACE}{\char`\{}
\newcommand{\RIGHTBRACE}{\char`\}}
\newcommand{\TILDE}{\textasciitilde} % {\char`\~}

% \FUN{name} highlights the name.
% \FUNDEC{name} declares Name.name as the target of links to name.
% \FUNREF{name} links name to the target Name.name in the current file.
% \FUNHYP{url}{file}{name} links name to Name.name at url/file/index.html.
% Similarly for \VAR{partvariable}, \SYN{syntaxname}, \SEM{semanticsName},
% and \SECT{sectionnumber}

% The kerns in \SUB and \VAR avoid overlaps with primes:

\newcommand{\SUB}[1]{_{\kern-2mu#1}}

% PLAIN

\newcommand{\STYLE}[2]{\htmlClass{cbs-#1}{#2}}

\newcommand{\VAR}[1]{\STYLE{PartVariable}{\textit{#1\kern2mu}}}
\newcommand{\FUN}[1]{\STYLE{Name}{\textsf{#1}}}
\newcommand{\SYN}[1]{\STYLE{SyntaxName}{\textsf{#1}}}
\newcommand{\SEM}[1]{\STYLE{SemanticsName}{\textsf{#1}}}
\newcommand{\SECT}[1]{\STYLE{SectionNumber}{\textsf{#1}}}
\newcommand{\LANG}[1]{\STYLE{Language}{\textsf{#1}}}

% DEC

\newcommand{\DEC}[3]{\htmlId{#1:#2}{#3}}

\newcommand{\VARDEC}[1]{\DEC{PartVariable}{#1}{\VAR{#1}}}
\newcommand{\FUNDEC}[1]{\DEC{Name}{#1}{\FUN{#1}}}
\newcommand{\SYNDEC}[1]{\DEC{SyntaxName}{#1}{\SYN{#1}}}
\newcommand{\SEMDEC}[1]{\DEC{SemanticsName}{#1}{\SEM{#1}}}
\newcommand{\SECTDEC}[1]{\DEC{SectionNumber}{#1}{\textsf{#1}}}
% \newcommand{\LANGDEC}[1]{\DEC{Language}{#1}{\LANG{#1}}}

% REF

\newcommand{\REF}[3]{\href{###1:#2}{#3}}

\newcommand{\VARREF}[1]{\REF{PartVariable}{#1}{\VAR{#1}}}
\newcommand{\FUNREF}[1]{\REF{Name}{#1}{\FUN{#1}}}
\newcommand{\SYNREF}[1]{\REF{SyntaxName}{#1}{\SYN{#1}}}
\newcommand{\SEMREF}[1]{\REF{SemanticsName}{#1}{\SEM{#1}}}
\newcommand{\SECTREF}[1]{\REF{SectionNumber}{#1}{\SECT{#1}}}
% \newcommand{\LANGREF}[1]{\REF{Language}{#1}{\LANG{#1}}}

% HYP

\newcommand{\HYP}[5]{\href{#1/#2/index.html###3:#4}{#5}}

\newcommand{\VARHYP}[3]{\HYP{#1}{#2}{PartVariable}{#3}{\VAR{#3}}}
\newcommand{\FUNHYP}[3]{\HYP{#1}{#2}{Name}{#3}{\FUN{#3}}}
\newcommand{\SYNHYP}[3]{\HYP{#1}{#2}{SyntaxName}{#3}{\SYN{#3}}}
\newcommand{\SEMHYP}[3]{\HYP{#1}{#2}{SemanticsName}{#3}{\SEM{#3}}}
\newcommand{\SECTHYP}[3]{\HYP{#1}{#2}{SectionNumber}{#3}{\SECT{#3}}}
% \newcommand{\LANGHYP}[3]{\HYP{#1}{#2}{Language}{#3}{\LANG{#3}}}

% CBS-beta/math hyperlinks

\newcommand\CBSBETAMATH{https://plancomps.github.io/CBS-beta/math}

\newcommand\VARCBS[3]{\VARHYP{\CBSBETAMATH/#1}{#2}{#3}}
\newcommand\FUNCBS[3]{\FUNHYP{\CBSBETAMATH/#1}{#2}{#3}}
\newcommand\SYNCBS[3]{\SYNHYP{\CBSBETAMATH/#1}{#2}{#3}}
\newcommand\SEMCBS[3]{\SEMHYP{\CBSBETAMATH/#1}{#2}{#3}}
\newcommand\SECTCBS[3]{\SECTHYP{\CBSBETAMATH/#1}{#2}{#3}}
% \newcommand{\LANGCBS}[3]{\LANGHYP{\CBSBETAMATH/#1}{#2}{#3}}

% \LEFTPHRASE MATH \RIGHTPHRASE produces [[ MATH ]] with proper brackets:

\newcommand{\LEFTPHRASE}{\llbracket}
\newcommand{\RIGHTPHRASE}{\rrbracket}

% \LEFTGROUP MATH \RIGHTGROUP produces ( MATH ) where the parentheses are
% highlighted the same as keywords:

\newcommand{\LEFTGROUP}{\STYLE{Key}{(}}
\newcommand{\RIGHTGROUP}{\STYLE{Key}{)}}

% MATH\PLUS produces a superscript +
% MATH\STAR produces a superscript *
% MATH\QUERY produces a superscript ?

\newcommand{\PLUS}{ {}^{\texttt{+}}}
\newcommand{\STAR}{ {}^{\texttt{*}}}
\newcommand{\QUERY}{ {}^{\texttt{?}}}

% \RULE{premise}{conclusion} produces
%     premise
%   ----------
%   conclusion

\newcommand{\RULE}[2]{\mkern-2.2mu\frac{\displaystyle#1}{\displaystyle#2}}
% See https://tex.stackexchange.com/questions/337328/superscripts-appear-in-various-weird-places-in-fractions

% \RULE
%   {\begin{aligned} & premise \\ & ... \end{aligned}}
%   {\begin{aligned} & conclusion ... \\ & ... \end{aligned}}
% produces an inference rule with left-aligned premises and split conclusion
%      premise
%      ...
%   --------------
%   conclusion ...
%   ...

% \TO TYPE produces => TYPE

\newcommand{\TO}{\mathop{\Rightarrow}}

% TERM \TRANS TERM produces TERM ---> TERM

\newcommand{\TRANS}{\longrightarrow}

% TERM \xrightarrow{LABEL} TERM puts the label above the long arrow