This material is subject to the LaTeX Project Public License. See http://www.ctan.org/tex-archive/help/Catalogue/licenses.lppl.html for the details of that license. The chet package is inspired by Paul Ginsparg's harvmac, but uses LaTeX2e instead of TeX. The commands provided are to be used as faster alternatives to LaTeX's default environments (which can all still be used in chet). To use chet just copy chet.sty in the folder of the TeX file you are compiling (or in your path) and include \usepackage{chet} in the preamble of your LaTeX file.