\chapter{Language extensions} \label{c:extensions}
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This chapter describes language extensions and convenience features
that are implemented in OCaml, but not described in chapter \ref{c:refman}.


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\section{s:letrecvalues}{Recursive definitions of values}
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\input{letrecvalues.tex}

\section{s:recursive-modules}{Recursive modules}
\ikwd{module\@\texttt{module}}
\ikwd{and\@\texttt{and}}
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\input{recursivemodules.tex}

\section{s:private-types}{Private types}
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\ikwd{private\@\texttt{private}}
\input{privatetypes.tex}

\section{s:locally-abstract}{Locally abstract types}
\ikwd{type\@\texttt{type}}
\ikwd{fun\@\texttt{fun}}
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\input{locallyabstract.tex}

\section{s:first-class-modules}{First-class modules}
\ikwd{module\@\texttt{module}}
\ikwd{val\@\texttt{val}}
\ikwd{with\@\texttt{with}}
\ikwd{and\@\texttt{and}}
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\input{firstclassmodules.tex}

\section{s:module-type-of}{Recovering the type of a module}
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\ikwd{module\@\texttt{module}}
\ikwd{type\@\texttt{type}}
\ikwd{of\@\texttt{of}}
\ikwd{include\@\texttt{include}}
\input{moduletypeof.tex}

\section{s:signature-substitution}{Substituting inside a signature}
\ikwd{with\@\texttt{with}}
\ikwd{module\@\texttt{module}}
\ikwd{type\@\texttt{type}}
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\input{signaturesubstitution.tex}

\section{s:module-alias}{Type-level module aliases}
\ikwd{module\@\texttt{module}}
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\input{modulealias.tex}

\section{s:explicit-overriding-open}{Overriding in open statements}
\ikwd{open.\@\texttt{open\char33}}
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\input{overridingopen.tex}

\section{s:gadts}{Generalized algebraic datatypes} \ikwd{type\@\texttt{type}}
\ikwd{match\@\texttt{match}}
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\input{gadts.tex}

\section{s:bigarray-access}{Syntax for Bigarray access}
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\input{bigarray.tex}

\section{s:attributes}{Attributes}
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\ikwd{when\@\texttt{when}}
\input{attributes.tex}

\section{s:extension-nodes}{Extension nodes}
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\input{extensionnodes.tex}

\section{s:extensible-variants}{Extensible variant types}
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\input{extensiblevariants.tex}

\section{s:generative-functors}{Generative functors}
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\input{generativefunctors.tex}

\section{s:extension-syntax}{Extension-only syntax}
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\input{extensionsyntax.tex}

\section{s:inline-records}{Inline records}
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\input{inlinerecords.tex}

\section{s:doc-comments}{Documentation comments}
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\input{doccomments.tex}

\section{s:index-operators}{Extended indexing operators }
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\input{indexops.tex}

\section{s:empty-variants}{Empty variant types}
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(Introduced in 4.07.0)
\input{emptyvariants.tex}

\section{s:alerts}{Alerts}
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\input{alerts.tex}

\section{s:generalized-open}{Generalized open statements}
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\input{generalizedopens.tex}

\section{s:binding-operators}{Binding operators}
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\input{bindingops.tex}

\section{s:effect-handlers}{Effect handlers}
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\input{effects.tex}


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