diff --git a/README.org b/README.org
index 1d82401..9b672a4 100644
--- a/README.org
+++ b/README.org
@@ -208,7 +208,6 @@ The [[info:emacs#Init File][init file (info)]] does not load the ~custom-file~ a
      '(applescript-mode   ; mode to edit AppleScript code
        async              ; asynchroneous processing
        auctex             ; Aalborg University Center TeX
-       blacken            ; Black Python code formatter client
        citar              ; bibliography handling
        citeproc           ; bibliography handling
        code-cells         ; lightweight notebooks in Emacs
@@ -2420,6 +2419,28 @@ non-interactive =org-element= functions to an =Emacs-lisp= buffer.
 :CUSTOM_ID: sec:programming
 :END:
 
+** [[https://github.com/lassik/emacs-format-all-the-code#readme][Format-all]]
+:PROPERTIES:
+:CUSTOM_ID: sec:format-all
+:END:
+
+Listing [[lst:configure-format-all]] configures [[https://github.com/lassik/emacs-format-all-the-code#readme][format-all]] which is a package that
+provides an universal interface to code formatters of more than 60 computer
+languages.
+
+#+caption[Configure =format-all=]:
+#+caption: Configure =format-all=.
+#+name: lst:configure-format-all
+#+begin_src emacs-lisp
+  ;; https://ianyepan.github.io/posts/format-all/
+  ;; https://github.com/lassik/emacs-format-all-the-code#readme
+  (when (ensure-package-installation
+         'format-all) ; universal code formatters interface
+
+    (when (fboundp 'format-all-ensure-formatter)
+      (add-hook 'prog-mode-hook #'format-all-ensure-formatter)))
+#+end_src
+
 ** [[https://dept-info.labri.fr/~strandh/Teaching/PFS/Common/Strandh-Tutorial/Dir-symbolic.html][Common Lisp programming]]
 :PROPERTIES:
 :CUSTOM_ID: sec:common-lisp-programming
@@ -2779,24 +2800,9 @@ such a proper [[info:emacs#Directory Variables][.dir-locals.el]] file.
 | =eldoc-doc-buffer=        | {{{kbd(C-h .)}}} | =eglot-mode-map= |
 |---------------------------+------------------+------------------|
 
-Lising [[lst:configure-blacken]] configures [[https://github.com/pythonic-emacs/blacken#readme][blacken]], because I use it to format all
-new Python code with the [[https://black.readthedocs.io/en/stable/index.html][Python Black code formatter]]. Listing
-[[lst:pyproject-toml-kick-off]] and [[lst:setup-cfg-kick-off]] implement the rules in
-[[https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html][using black with other tools]] in order to make [[https://flake8.pycqa.org/en/latest/][flake8]] or [[https://pycodestyle.pycqa.org/en/latest/][pycodestyle]] agree with
-[[https://black.readthedocs.io/en/stable/index.html][black's uncompromising style]].
-
-#+caption[Configure =blacken=]:
-#+caption: Configure =blacken=.
-#+name: lst:configure-blacken
-#+begin_src emacs-lisp
-  (when (fboundp 'blacken-buffer)
-    (defun advice-derived-python-mode-p (fn &rest args)
-      (if (derived-mode-p 'python-mode)
-          (apply fn args)
-        (message "Refusal to run %S, since buffer is in %S." fn major-mode)))
-
-    (advice-add 'blacken-buffer :around #'advice-derived-python-mode-p))
-#+end_src
+Listing [[lst:pyproject-toml-kick-off]] and [[lst:setup-cfg-kick-off]] implement the
+rules in [[https://black.readthedocs.io/en/stable/guides/using_black_with_other_tools.html][using black with other tools]] in order to make [[https://flake8.pycqa.org/en/latest/][flake8]] or [[https://pycodestyle.pycqa.org/en/latest/][pycodestyle]]
+agree with [[https://black.readthedocs.io/en/stable/index.html][black's uncompromising style]].
 
 #+caption[Kick starting a =pyproject.toml= file]:
 #+caption: Kick starting a =pyproject.toml= file.
@@ -2907,6 +2913,29 @@ index bf312f6..4758b53 100644
 #+end_src
 :end:
 
+*** [[https://github.com/pythonic-emacs/blacken#readme][Blacken]]
+:PROPERTIES:
+:CUSTOM_ID: sec:blacken
+:END:
+Listing [[lst:configure-blacken]] configures [[https://github.com/pythonic-emacs/blacken#readme][blacken]] to format Python code with the
+[[https://black.readthedocs.io/en/stable/index.html][Python Black code formatter]].
+
+#+caption[Configure =blacken=]:
+#+caption: Configure =blacken=.
+#+name: lst:configure-blacken
+#+begin_src emacs-lisp
+  (when (ensure-package-installation
+         'blacken) ; Black Python code formatter client
+
+    (when (fboundp 'blacken-buffer)
+      (defun advice-derived-python-mode-p (fn &rest args)
+        (if (derived-mode-p 'python-mode)
+            (apply fn args)
+          (message "Refusal to run %S, since buffer is in %S." fn major-mode)))
+
+      (advice-add 'blacken-buffer :around #'advice-derived-python-mode-p)))
+#+end_src
+
 *** [[https://jedi.readthedocs.io/en/latest/][Jedi]]
 :PROPERTIES:
 :CUSTOM_ID: sec:jedi