This is the package thmbox. It provides a fancy formatting of theorem-like environments with boxes around them, and a few auxiliary features. To extract the package file, just type latex thmbox.ins which will produce the file thmbox.sty. Once this is done, you can get documentation by compiling the source using latex thmbox.dtx Enjoy! This package is written by Emmanuel Beffara, it released under the terms of the LaTeX Project Public License (LPPL).