--- Libc/Libc-498/string/strcpy.3
+++ Libc/Libc-583/string/strcpy.3
@@ -101,6 +101,9 @@
 is
 .Em not
 terminated.
+.Pp
+The source and destination strings should not overlap, as the
+behavior is undefined.
 .Sh RETURN VALUES
 The
 .Fn strcpy