The program files 'ri' and 'refdec.rb' are copyright (c) 2001 Dave
Thomas, The Pragmatic Programmers, and are released under the same
terms as Ruby.

The contents of the serialized classes in the 'descriptions' directory
are derived from the book Programming Ruby, which is copyright (c)
2001 Addison Wesley Longman. The book is available online under
the Open Publication License, and these extracts were made under
the terms of that license.

