# Change line spacing inside the document

This is my code

\documentclass[12pt,a4paper]{book}
\renewcommand{\baselinestretch}{1.5}
\begin{document}
\include{Chapter1}
\end{document}


I have please a question:

I would change the line spacing (1.5 --> 1.0) of a page inside the document and not the entire document and the size of the words, how can I do please?

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after using your code my chapters start being displayed on the left side (which is odd and wrong) - how can I make latex display them on the right (also known as the right) side again? I'm using the {book} class. – TheChymera Nov 14 '13 at 19:19

## 1 Answer

You can use \setstretch{}. If you want to only affect a certain content you can use it with a group.

You can also apply any size changing switches such as \small or \tiny inside the {} group as well.

## Code

\documentclass[12pt,a4paper]{book}
\usepackage{xcolor}
\usepackage{lipsum}
\usepackage{setspace}

\renewcommand{\baselinestretch}{1.5}

\begin{document}
\lipsum[1]
{\setstretch{1.0}\color{blue}
\lipsum[2]
}
\lipsum[3]
\end{document}

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Just remember to end the paragraph before the final } (\lipsum adds a \par at its end). Using \linespread{1.5} (or some command of setspace) is better than redefining \baselinestretch. – egreg Nov 22 '12 at 21:47
@Peter Thank you so much :) Please i have another question: i have used \documentclass[12pt,a4paper]{book} and i'd like to change the size 12 to 10 of one paragraph inside the document, Have you an idea please ? – researcher Dec 21 '12 at 13:25
@researcher: You could try using the answers from LaTeX — specify font point size? and keep the change to be within a group (either inside a brace group {}, or within \begingroup, \endgroup pair. If that does not help you achieve the desired results you should post a separate question. Also, please note that you should use the full username with the @ syntax. I was only notified of this as it was a comment to an answer of mine. – Peter Grill Dec 21 '12 at 19:01
i set \fontsize{10} just before the text ? – researcher Dec 21 '12 at 19:19
@researcher: fontsize has two parameters, not one. – Peter Grill Dec 21 '12 at 19:20