\part (LaTeX2e unofficial reference manual (November 2018))

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### 6.1 `\part`

Synopsis, one of:

    \part{title}
    \part*{title}
    \part[toc-title]{title}

Start a document part. The standard LaTeX classes `book`, `report`, and `article`, all have this command.

This produces a document part, in a book.

    \part{VOLUME I \\
           PERSONAL MEMOIRS OF  U.\ S.\ GRANT}
    \chapter{ANCESTRY--BIRTH--BOYHOOD.}
    My family is American, and has been for generations,
    in all its branches, direct and collateral.

In each standard class the `\part` command outputs a part number such as ‘`Part I`’, alone on its line, in boldface, and in large type. Then LaTeX outputs title, also alone on its line, in bold and in even larger type. In class `book`, the LaTeX default puts each part alone on its own page. If the book is two-sided then LaTeX will skip a page if needed to have the new part on an odd-numbered page. In `report` it is again alone on a page, but LaTeX won’t force it onto an odd-numbered page. In an `article` LaTeX does not put it on a fresh page, but instead outputs the part number and part title onto the main document page.

The `*` form shows title but it does not show the part number, does not increment the `part` counter, and produces no table of contents entry.

The optional argument toc-title will appear as the part title in the table of contents (see Table of contents etc.) and in running headers (see Page styles). If it is not present then title will be there. This example puts a line break in title but leaves out the break in the table of contents.

    \part[Up from the bottom; my life]{Up from the bottom\\ my life}

For determining which sectional units are numbered and which appear in the table of contents, the level number of a part is -1 (see Sectioning/secnumdepth and see Sectioning/tocdepth).

In the class `article`, if a paragraph immediately follows the part title then it is not indented. To get an indent you can use the package `indentfirst`.

One package to change the behavior of `\part` is `titlesec`. See its documentation on CTAN.

Unofficial LaTeX2e reference manual