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Making paragraphs

To start a paragraph, just type some text. To end the current paragraph, put an empty line. This is three paragraphs, separated 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?''

The separator lines must be empty, including not containing a comment character, %.

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 line before the \end{equation}

\begin{equation}
  2^{|S|} > |S|

\end{equation}

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’.

• \par		End the current paragraph.
• \indent & \noindent		Go into horizontal mode, possibly with an indent.
• \parindent & \parskip		Space added before paragraphs.
• Marginal notes		Put remarks in the margin.