X Selections, Cut Buffers, and Kill Rings. © 1997, 2002 by Jamie Zawinski <jwz@jwz.org> This document began as a description of how Emacs and XEmacs deal with copying and pasting text under X11. However, I've noticed that a lot of people are being referred here to answer more general questions of how copying and pasting work under X, or, more specifically, how they should implement copying and pas