I plan to explore the possibility of ``copyleft'' for the electronic book, and ``copyright'' for the paper book distributor. Copyleft is a legal invention of Richard Stallman at the Free Software Foundation. Oversimplifying, it means you can give it away, but not incorporate it in a product of your own, unless you give that away too. Publishers do not seem opposed to copyleft on the electronic document. They say that inexpensive copy machines have not put them out of business, and they don't expect clumsy and expensive workstations to do so either.