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I have a weird problem when I am adding subsection and subsubsection in the Elsevier template. Basically, when I am compiling the document, I realized that they ignore the commands of subsection and subsubsection and display it as if it's a normal section.

Here is a sample of the code :

\documentclass[a4paper,fleqn]{cas-sc}
\usepackage{float}
\usepackage{graphicx} 
\begin{document}
\section{A}
dmddd
\subsection{AA}
\subsubsection{BB}
\end{document}

It displays the following :

1.A

dmddd

2.AA

3.BB

Any help to resolve this issue?

marked as duplicate by campa, DG', leandriis, Zarko, Stefan Pinnow Feb 18 at 9:07

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