# Sectioning in letter-type documents

I want to use sectioning in letters (section, subsection, etc), but here I read that basically all of these sectioning commands do not apply to letters. What is the proper way to create sections in letters?

Using: documentclass[stdletter]{newlfm}

-
Which document class are you using? –  Gonzalo Medina Aug 5 '12 at 18:13
Sorry, not mentioned -- added now! –  user Aug 5 '12 at 18:14
'etc.'? How many sectional levels will this letter need? And do you need to emulate simply the look/style of different sections (bold, large, small caps, etc.), which would be easy enough, or do you need them to do all the things normal sectional divisions do (numbered, unnumbered, in ToC, not in ToC), which would require a more involved solution. –  jon Aug 5 '12 at 18:18
I only needed this to visually achieve something similar to the section & subsection headers. I've used the newcommand function to get this done. Thanks all! –  user Aug 5 '12 at 18:30

Here's one possible solution, using the kernel command \@startsection (you chan find a description of this command in Where can I find help files or documentation for commands like \@startsection for LaTeX?) to redefine the \section command (the newlfm class offers a very basic \section command) and define the \subsection command to behave as those from article.cls. Basically, all you have to do is to define the counters and use \@startsection with appropriate settings. A simple example:

\documentclass[stdletter]{newlfm}

\newcounter{section}
\newcounter{subsection}[section]
\setcounter{secnumdepth}{3}
\makeatletter
\renewcommand\section{\@startsection {section}{1}{\z@}%
{-3.5ex \@plus -1ex \@minus -.2ex}%
{2.3ex \@plus.2ex}%
{\normalfont\Large\bfseries}}
\newcommand\subsection{\@startsection{subsection}{2}{\z@}%
{-3.25ex\@plus -1ex \@minus -.2ex}%
{1.5ex \@plus .2ex}%
{\normalfont\large\bfseries}}
\renewcommand \thesection{\@arabic\c@section}
\renewcommand\thesubsection{\thesection.\@arabic\c@subsection}

\makeatother

\begin{document}

\section{Test Section One}
\subsection{Test Subsection One One}
\subsection{Test Subsection One Two}
\section{Test Section Two}
\subsection{Test Subsection Two One}
\subsection{Test Subsection Two Two}

\end{document}


The previous solution doen't make provissions for a ToC, but this is also really simple: all one has to do is to define \tableofcontents using \@starttoc and define \l@section, \l@subsection to typeset the corresponding entries.

-

You have already accepted an answer, but I give you another option:

You can use scrlttr2 from the KOMAscript-bundle by loading the letter class option file, section.lco. The appearance of the sections can be modified by standard komascript-commands. This .LCO also handles section with stars (\section*{Test}. section.lco gives you four levels of headings.

You can download section.lco from KOMAscript’s homepage. Put section.lco in your local-texmf, and remember to update the file database.

And MWE:

\documentclass[UKenglish]{scrlttr2}
\usepackage{babel,blindtext}
\usepackage[utf8]{inputenx}
\usepackage[T1]{fontenc}

\begin{document}
\begin{letter}{Name of Recipient \\ Address \\ of \\ Recipient}

\setkomavar{subject}{This is a strict formal letter}

\opening{}  % eg. Hello

\section{Section one}
\blindtext

\subsection{Subsection also}
\blindtext

\section{Section two}
\blindtext

\closing{Kind regards} %eg. Regards

\end{letter}
\end{document}

-