# Special sectioning requirements

I'm writing a book chapter and the editor has some specific formatting requirements. In particular, he wants the section titles to be centered and not bold. I'm using titlesec with:

\titleformat{\section}
{\normalfont\fontfamily{cm}\fontsize{16}{19}\selectfont}{\thesection}{1em}{}


This ensures the section title is not bold. To make it centered, I did:

\titleformat{\section}
\centering{{\normalfont\fontfamily{cm}\fontsize{16}{19}\selectfont}{\thesection}}{1em}{}


However, this somehow ignores the fontsize, resulting in a unbolded, centered, but small font sized section title. How can I ensure the fontsize is larger, as indicated in the command?

• The syntax in the second code is wrong, as \centering should go after the opening brace and not before; also cmr is the family name, but you don't need it. – egreg Jun 29 '14 at 13:54

Your syntax is wrong; here is a more correct one. The arguments to \titleformat needn't be specified in this format, but this I find it more readable to keep each one in a separate line.

\documentclass{book}
\usepackage{lmodern}
\usepackage{titlesec}

\titleformat{\section}
{\centering\normalfont\fontsize{16}{19}\selectfont}
{\thesection}
{1em}
{}

\begin{document}
\chapter{First}
\section{A title}
\end{document}


I added \usepackage{lmodern} in order to have arbitrarily scalable fonts. Note that giving \fontfamily is redundant, because \normalfont already sets the default font family.