copyright -- a string containing the copyright notice for Macaulay 2

i1 : copyright

o1 = Macaulay 2, version 0.9.20
     --Copyright 1993-2004, D. R. Grayson and M. E. Stillman
     --Singular-Factory 3.0.2, copyright 1993-2001, G.-M. Greuel, et al.
     --Singular-Libfac 3.0.1, copyright 1996-2001, M. Messollen
     --NTL Library 5.4, copyright, Victor Shoup
     --GNU MP Library 4.2.1