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I have 

\usepackage{titlesec} \titleformat{\section}[runin] {\normalfont\Large\bfseries}{\thesection}{1em}{} \titleformat{\subsection}[runin] {\normalfont\large\bfseries}{\thesubsection}{1em}{}

which moves the text up after the section (and subsection). How can I add a period after the section title so that I get:

2.3 Section title. Text of paragraph...

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    This is covered in the titlesec documentation using two different approaches. See section 4.4. Putting a Dot after the Section Title (p 12) with \periodafter and a similar approach using the explicit package option (section 3.7. Other Package Options, p 8). Commented Oct 9, 2013 at 22:19
  • @Werner: Thanks for the comment. I will take a look at this. Commented Oct 9, 2013 at 22:21

1 Answer 1

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Two ways.

The last argument of \titleformat can contain a macro that takes the title as its argument. So

\usepackage{titlesec} \titleformat{\section}[runin] {\normalfont\Large\bfseries} {\thesection} {1em} {\addperiod} \titleformat{\subsection}[runin] {\normalfont\large\bfseries} {\thesubsection} {1em} {\addperiod} \newcommand{\addperiod}[1]{#1.}

Alternatively, use the explicit option; in this case you have to use #1 in the last argument to \titleformat to stand for the title.

\usepackage[explicit]{titlesec} \titleformat{\section}[runin] {\normalfont\Large\bfseries} {\thesection} {1em} {#1.} \titleformat{\subsection}[runin] {\normalfont\large\bfseries} {\thesubsection} {1em} {#1.}

The first way is more customizable.

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  • Thanks for this solution! I first had some problems to get this working in combination with Springer llcns style. I also found this post: tex.stackexchange.com/questions/103020/… The combination of both solutions solved my problem. Commented Jun 28, 2019 at 21:35

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