This is Debian GNU/Linux's prepackaged version of BibTool -- a tool for manipulating BibTeX data bases. This package was oroginally assembled by Brian Mays and later significantly revamped by Henning Makholm. The source was downloaded from CTAN, directory ctan:/biblio/bibtex/utils/bibtool/ BibTool is (c) 1996-2004 Gerd Neugebauer. It is distributed under the GNU General Public License. On Debian GNU/Linux systems, the complete text of the GNU General Public License can be found in "/usr/share/common-licenses/GPL".