The document discusses the basics of copyright law in the United States, including its origins in the Constitution, what works are protected, how long copyright lasts, exceptions like fair use, and questions about copyright. It notes that copyright automatically applies as soon as an original work is fixed in a tangible form and usually lasts for the life of the author plus 70 years. Exceptions to copyright include ideas and works in the public domain. The document also provides resources for further information on copyright and copyright-free works.

4. Copyright in action

5. Copyright in action

6. Copyright in action

7. Copyright in action

14. Current example