* src/fns.c (Fappend): Clarify whether arguments are copied.
doc: /* Concatenate all the arguments and make the result a list.
The result is a list whose elements are the elements of all the arguments.
Each argument may be a list, vector or string.
-The last argument is not copied, just used as the tail of the new list.
+
+All arguments except the last argument are copied. The last argument
+is just used as the tail of the new list.
+
usage: (append &rest SEQUENCES) */)
(ptrdiff_t nargs, Lisp_Object *args)
{