+Copyright assignment is a simple process. If you live in the US, you
+can do it entirely electronically. We can help you get started, and
+answer any questions you may have (or point you to the people with the
+answers), at the emacs-devel@gnu.org mailing list.
+
+A copyright disclaimer is also a possibility, but we prefer an assignment.
+We can accept small changes (roughly, fewer than 15 lines) without
+an assignment. This is a cumulative limit (e.g. three separate 5 line
+patches) over all your contributions.