+@cindex yanking and text properties
+@defopt yank-excluded-properties
+Yanking discards certain text properties from the yanked text, as
+described above. The value of this variable is the list of properties
+to discard. Its default value contains properties that might lead to
+annoying results, such as causing the text to respond to the mouse or
+specifying key bindings.
+@end defopt
+