The mh bundle was a series of packages to enhance the appearance of documents containing a lot of maths; the package were designed to support and extend the LaTeX required amsmath The packages (no longer distributed as a bundle) comprise: breqn, which enables automatic line-breaking in displayed equations; empheq, which provides various mechanisms for ‘visual markup’ of mathematical matter; flexisym, which converts symbol definitions to a form usable within breqn; mathstyle, which takes advantage of LaTeX’s suppression of some of TeX’s maths operators, to improve the performance of sub- and superscripts, and other aspects of mathematical typesetting style, including the ever-tricky \mathchoice operator; mathtools, providing a range of extensions to maths as a whole; and mhsetup, which provides various programming tools for other packages of the set.