# How to number sections in LaTeX?

Hello I'm new to latex so don't know much. I'm writing my lab report (prl,aps,revtex4-1 etc) and I want the sections to be numbered in Roman numerals but I can't seem to figure it out. For example my first section is introduction so I've done

\section{Introduction}


so it just says introduction and it's not numbered

I've tried many things but nothing seems to work however i found this works

\setcounter{secnumdepth}{5}


However I am also being marked on my coding (I'm a first year uni student)

I was wondering if this is the correct code for numbering sections and I'm not entirely sure what the number at the end means either please help.

Thank you :)

\begin{document}

\title{Example Lab Report}
\date{Submitted: \today{}, Date of Experiment: EXPERIMENT DATE}
\author{A. Student (and L. Partner)}
\affiliation{\normalfont L1 Discovery Labs, Lab Group XXX, Lab Day}

\begin{abstract}

ABSTRACT HERE

\end{abstract}

\maketitle
\thispagestyle{plain} % produces page number for front page

\setcounter{secnumdepth}{1}
\section{Introduction}

• Welcome to TeX SX! Could you post a minimal code reproducing the problem, that we can play with? – Bernard Dec 20 '18 at 20:43
• in the standard classes sections have level 1 and secnumdepth is 3 so sections are numbered by default, presumably you are using a non standard class that sets it (to 0?) to stop sections being numbered. – David Carlisle Dec 20 '18 at 20:52
• \begin{document} \title{Example Lab Report} \date{Submitted: \today{}, Date of Experiment: EXPERIMENT DATE} \author{A. Student (and L. Partner)} \affiliation{\normalfont L1 Discovery Labs, Lab Group XXX, Lab Day} \begin{abstract} ABSTRACT HERE \end{abstract} \maketitle \thispagestyle{plain} \setcounter{secnumdepth}{1} \section{Introduction} – Cinna Dec 20 '18 at 20:56
• is that enough code for you ? – Cinna Dec 20 '18 at 20:57
• david carlisle I'm not going to lie i have no idea what you said xD – Cinna Dec 20 '18 at 20:58

Use prd as the journal.

\documentclass[
prd,
aps,
twocolumn,
10pt,
]{revtex4-1}

\usepackage{lipsum} % for context

\begin{document}

\title{Example Lab Report}
\date{Submitted: \today{}, Date of Experiment: EXPERIMENT DATE}
\author{A. Student (and L. Partner)}
\affiliation{\normalfont L1 Discovery Labs, Lab Group XXX, Lab Day}

\begin{abstract}

ABSTRACT HERE

\end{abstract}

\maketitle
\thispagestyle{plain} % produces page number for front page

\section{Introduction}

\lipsum[1-2]

\section{Tests}

\lipsum

\end{document}


• I still don't get it what does lipsum mean ? and why have you put the numbers 1-2 ?? – Cinna Dec 21 '18 at 0:28
• @mavihs26 \lipsum[1-2] is just for producing dummy text. The package is not necessary for a real document. – egreg Dec 21 '18 at 0:30
• Changing to prd fixed it nevermind. Thank you for your help – Cinna Dec 21 '18 at 0:31