Notice of Public Domain nature of MOPAC.
``This computer program is a work of the United States Government and as such is not subject to protection by copyright (17 U.S.C. # 105.) Any person who fraudulently places a copyright notice or does any other act contrary to the provisions of 17 U.S. Code 506(c) shall be subject to the penalties provided therein. This notice shall not be altered or removed from this software and is to be on all reproductions.''
I recommend that a user obtain a copy by either copying it from an existing site or ordering an `official' copy from the Quantum Chemistry Program Exchange, (QCPE), Department of Chemistry, Indiana University, Bloomington, Indiana, 47405. The cost covers handling only. Contact the Editor, Richard Counts, at (812) 855-4784 for further details.