CTAN Comprehensive TeX Archive Network

Directory macros/latex/contrib/breqn


The BREQN packages

This is the latest repository for the breqn package, originally developed by Michael J. Downes and later taken over by Morten Høgholm. Will Robertson currently manages the code but without time for major development.


The breqn packages are distributed in the major distributions so manual installation is only necessary if you wish to install pre-release versions or contribute to the development of the package.

Individually, running pdftex on each dtx file extracts the runtime files. As a package, l3build install will extract the needed files and install them locally.

The code


The breqn package facilitates automatic line-breaking of displayed math expressions.


This package turns math symbols into macros. It is required by breqn so that breqn can make intelligent decisions with respect to line-breaking and other details.


Ensures uniform syntax for math subscript () and superscript (^) operations so that they always take exactly one argument. Grants access to the current mathstyle which eases several tasks such as avoiding the many pitfalls of mathchoice and mathpalette. This package is used by flexisym.

Download the contents of this package in one zip archive (1.2M).

breqn – Automatic line breaking of displayed equations

The package provides solutions to a number of common difficulties in writing displayed equations and getting high-quality output. For example, it is a well-known inconvenience that if an equation must be broken into more than one line, ‘left...right’ constructs cannot span lines. The breqn package makes them work as one would expect whether or not there is an intervening line break.

The single most ambitious goal of the package, however, is to support automatic linebreaking of displayed equations. Such linebreaking cannot be done without substantial changes under the hood in the way formulae are processed; the code must be watched carefully, keeping an eye on possible glitches.

The bundle also contains the flexisym and mathstyle packages, which are both designated as support for breqn.

Home pagehttp://wspr.io/breqn/
Version0.98l 2021-10-28
LicensesThe Project Public License 1.3
Copyright1997–2003 Michael J. Downes
2007–2008 Morten Høgholm
2007–2014 Lars Madsen
2007–2020 Will Robertson
2010–2017 Joseph Wright
2020 Ulrike Fischer
MaintainerWill Robertson
Morten Høgholm (inactive)
Lars Madsen (inactive)
Joseph Wright (inactive)
Michael J. Downes (deceased)
TDS archivebreqn.tds.zip
Contained inTeX Live as breqn
MiKTeX as breqn
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