How to use sections/headings in a scrlttr2 letter?

Question

I use scrlttr2 as a letter template? (Together with mailmerge in case that is relevant.)

How can I use sections or headings inside of a long letter to structure it? Of course, I don't want to make use of a deeply-nested structure as in a scientific document, but just small headlines. They may not be a lot larger than the usual text and may just be bold. That is enough.

I've found this German website, but it only eplains how/that you can use sections outside of the letter. But I want them to be part of the letter.

Answer 1

Switch to one of the KOMA-Script classes scrartcl, scrreprt or scrbook and load package scrletter.

Example:

\documentclass{scrartcl}
\usepackage{scrletter}
\usepackage{blindtext}% only for dummy text
\begin{document}
\begin{letter}{Foo}
\opening{Hello,}
\blindtext
\blinddocument
\end{letter}
\end{document}

With scrartcl and package scrletter you can also use \minisec:

\documentclass{scrartcl}
\usepackage{scrletter}
\usepackage{blindtext}% only for dummy text
\begin{document}
\begin{letter}{Foo}
\opening{Hello,}
\blindtext
\minisec{mini heading}
\blindtext
\end{letter}
\end{document}

Answer 2

Well, I found an easy workaround by not using the LaTeX commands for headings, but just doing the styling manually.

Simply making it bold looks already very good for most letters.

Likely not the best, but works.

\documentclass[parskip=full]{scrlttr2}

\usepackage{lipsum}
\begin{document}
\begin{letter}{Jerry Garcia\\710 Ashbury St\\San Francisco\\CA 94117}
\opening{Dear Friend,}

\lipsum[10]

\textbf{Case} \vspace{-10pt}

\lipsum

\textbf{Reasoning} \vspace{-10pt}

\lipsum
\end{letter}

\end{document}

Answer 3

I did something really simple, just define in your preamble your own section command:

\newcommand{\section}[1]{%
    \textbf{#1}\\[2ex]
}