sectioning
I am writing a thesis using \documentclass[11pt,a4paper]{report}.
However, \subsubsection is not getting numbered. So on searching in TeX I
got an answer to insert \setcounter{secnumdepth}{3}.
Please tell me where to insert \setcounter{secnumdepth}{3}.
When you use the starred version the reference counter is not updated. If you don't want numbering below subsection, just change the secnumdepth counter. The following code demonstrates this:
\documentclass{report}
\usepackage{nameref}
\begin{document}
\setcounter{secnumdepth}{2}
\section{Section 1}
\subsection{subsection 1}
\subsubsection{subsubsection 1}
\label{subsubsec:1}
This should be unnumbered.
\subsubsection{subsubsection 2}
See subsubsection~\nameref{subsubsec:1}
\end{document}
Resulting in:
The following suggestion re-inserts the \numberline component of the ToC entry for all sectional units higher than secnumdepth. So, you'll get the original spacing of \section, \subsection,... in the ToC:
\documentclass{report}
\setcounter{secnumdepth}{0}% % Turns off numbering for sections
\makeatletter
\usepackage{etoolbox}% http://ctan.org/pkg/etoolbox
\patchcmd{\@sect}% <cmd>
{\else \protect}% <search>
{\protect\numberline{}\else\protect}% <replace>
{}{}% <success><failure>
\makeatother
\begin{document}
\tableofcontents
\chapter{Fundamental Algebraic Skills}
\section{Solving Difficult Linear Equations}
\subsection{Linear Equations that Contain Fractions}
\end{document}
etoolbox is used to patch \@sect, adding an empty \numberline as part of the test on secnumdepth.
Best Answer
Commands like this belong into the preamble, i.e. between
\documentclassand\begin{document}. If you want your\subsubsections also to be appear in the table of contents you should add\setcounter{tocdepth}{3}as well. Please see How to show subsections and subsubsections in TOC? for more information about this, including a list of sectioning levels and their numbers.