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15 Making paragraphs

To start a paragraph, just type some text. To end the current paragraph, put an empty line. This is three paragraphs, the separation of which is made by two empty lines.

It is a truth universally acknowledged, that a single man in possession
of a good fortune, must be in want of a wife.

However little known the feelings or views of such a man may be on his
first entering a neighbourhood, this truth is so well fixed in the minds
of the surrounding families, that he is considered the rightful property
of some one or other of their daughters.

My dear Mr. Bennet,'' said his lady to him one day,
have you heard that Netherfield Park is let at last?''


A paragraph separator is made of a sequence of at least one blank line, at least one of which is not terminated by a comment. A blank line is a line that is empty or made only of blank characters such as space or tab. Comments in source code are started with a % and span up to the end of line. In the following example the two columns are identical:

\documentclass[twocolumn]{article}
\begin{document}
First paragraph.

Second paragraph.
\newpage
First paragraph.

% separator lines may contain blank characters.

Second paragraph.
\end{document}


Once LaTeX has gathered all of a paragraph’s contents it divides that content into lines in a way that is optimized over the entire paragraph (see Line breaking).

There are places where a new paragraph is not permitted. Don’t put a blank line in math mode (see Modes); here the blank line before the

$$2^{|S|} > |S|$$


will get you the error ‘Missing \$ inserted’. Similarly, the blank line in this \section argument

\section{aaa

bbb}


gets ‘Runaway argument? {aaa ! Paragraph ended before \@sect was complete’.