\documentclass[]{article}
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\date{}

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\begin{document}

\section{lhs test}\label{lhs-test}

\texttt{unsplit} is an arrow that takes a pair of values and combines them to
return a single value:

\begin{Shaded}
\begin{Highlighting}[]
\OtherTok{unsplit ::} \NormalTok{(}\DataTypeTok{Arrow} \NormalTok{a) }\OtherTok{=>} \NormalTok{(b }\OtherTok{->} \NormalTok{c }\OtherTok{->} \NormalTok{d) }\OtherTok{->} \NormalTok{a (b, c) d}
\NormalTok{unsplit }\FunctionTok{=} \NormalTok{arr }\FunctionTok{.} \NormalTok{uncurry}
          \CommentTok{-- arr (\textbackslash{}op (x,y) -> x `op` y)}
\end{Highlighting}
\end{Shaded}

\texttt{(***)} combines two arrows into a new arrow by running the two arrows
on a pair of values (one arrow on the first item of the pair and one arrow on
the second item of the pair).

\begin{verbatim}
f *** g = first f >>> second g
\end{verbatim}

Block quote:

\begin{quote}
foo bar
\end{quote}

\end{document}