# Hide part and chapter headings

Is there a way to completely hide the \part and \chapter headings when they are called (but still show them in the toc)? Maybe using titlesec?

Note:

I'm using something like this to capture the chapter headings and reuse them:

\documentclass{book}
\usepackage[explicit]{titlesec}
\usepackage{lipsum}

\let\oldchapter\chapter
\oldchapter[#1]{#2}}

\newcommand*\Hide{%

\titleformat{\chapter}[display]
{}{}{0pt}{}
%\titleclass{\chapter}{straight}

\titleformat{\section}[display]
{\large} % format
{10pt} %sep
{} %before
}

\begin{document}

{
\Hide
\chapter{A first chapter}
\section{A first section}
\lipsum
}

\chapter{A second chapter}
\section{A second section}
\lipsum

\end{document}


When activating \titleclass{\chapter}{straight}, it seems \chaphead is not capture anymore.

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The headings must not be typeset, but the space they occupied must remain? – Gonzalo Medina Apr 18 '11 at 12:20
I mean to hide the chapter name completely, so it doesn't appear in the text. – ℝaphink Apr 18 '11 at 12:49

Indeed, you can use the titlesec package; its explicit option allows you to remove the titles:

\documentclass{book}
\usepackage[explicit]{titlesec}

\newcommand*\Hide{%
\titleformat{\chapter}[display]
{}{}{0pt}{\Huge}
\titleformat{\part}
{}{}{0pt}{}
}

\begin{document}
\tableofcontents

{
\Hide
\part{A test part}
\chapter{A test chapter}
\section{Test section}
}

\part{A test part}
\chapter{A test chapter}
\section{Test section}

\end{document}

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Alright, that removes the chapter headings... but it also removes the section headings, and the chapter headings outside of the environment in which I did the call to \titleformat... – ℝaphink Apr 18 '11 at 14:06
You can keep the changes local by using the grouping mechanism; I've edited my example to reflect this approach (and defining a command to simplify the work). – Gonzalo Medina Apr 18 '11 at 14:11
Hmmm... I'm using an environment already, that should limit the scope, shouldn't it? – ℝaphink Apr 18 '11 at 14:15
Without your actual relevant code it's really hard to tell. Why don't you add to your question all the necessary elements (in the sense of a minimal working example) affecting your request? – Gonzalo Medina Apr 18 '11 at 14:22
Again, without knowledge of your actual relevant code, this process of guessing is totally useless and time wasting... as I already suggested, add a minimal working example of your relevant code. – Gonzalo Medina Apr 18 '11 at 14:43

I extended and changed the example for class srcartcl to the following solution (You find the one for class srcbook below):

\documentclass{scrartcl}
\usepackage{blindtext}
\usepackage[explicit]{titlesec}

% change part format
\titleformat{\part}[drop]{}{}{0pt}{}
\titlespacing*{\part}{0pt}{0pt}{0pt}

\begin{document}
\tableofcontents

\part{One}
\blindtext
\section{Apple}
\blindtext
\section{Peach}
\blindtext

\part{Two}
\blindtext
\section{Red}
\blindtext
\section{Green}
\blindtext

\end{document}


Btw.: It works nicely together with the counter reset from Adendum 2 in this first answer.

\makeatletter
\makeatother


Here the code with scrbook:

\documentclass{scrbook}
\usepackage{blindtext}
\usepackage[explicit]{titlesec}

% change part format
\titleformat{\part}[drop]{}{}{0pt}{}
\titlespacing*{\part}{0pt}{0pt}{0pt}
\titleformat{\chapter}[drop]{}{}{0pt}{}
\titlespacing*{\chapter}{0pt}{0pt}{0pt}

\begin{document}
\tableofcontents

\part{One}
\blindtext
\chapter{Fruits}
\blindtext
\section{Apple}
\blindtext
\section{Peach}
\blindtext

\part{Two}
\blindtext
\chapter{Colours}
\blindtext
\section{Red}
\blindtext
\section{Green}
\blindtext

\end{document}

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