the attack is unrealistic on modern computer systems which don't
utilize swap memory usually.
-** The function 'display-buffer-in-major-side-window' is now internal.
-This hitherto undocumented function which existed since Emacs 24.1 has
-been renamed to 'window--make-major-side-window' and its semantics
-changed. Applications should use the now properly documented function
-'display-buffer-in-side-window' with appropriate arguments instead.
+** The function 'display-buffer-in-major-side-window' no longer exists.
+It has been renamed as internal function 'window--make-major-side-window',
+however applications should instead call 'display-buffer-in-side-window'
+(passing the SIDE and SLOT parameters as elements of ALIST). This approach
+is backwards-compatible with versions of Emacs in which the old function
+exists. See the node "(elisp) Displaying Buffers in Side Windows"
+in the ELisp manual for more details.
\f
* Lisp Changes in Emacs 26.1