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How to Use Square Brackets in LaTeX Enumerate

Code

In an enumerate environment, round brackets (, ) are used by default. If you want to use square brackets [, ], you should load the package with \usepackage{enumitem} and use it with \begin{enumerate}[label={[}\arabic*{]}]...\end{enumerate}.

\documentclass{article}

\usepackage{enumitem}
\begin{document}

\begin{enumerate}[label={[}\arabic*{]}]
\item IVE
\item LE SSERAFIM
\item IZ*ONE
\item LOVELYZ
\end{enumerate}

\end{document}