Organize the section on visual stuff

init.org

@@ -395,8 +395,11 @@
 
 ** Visual
 
-   I am using a lot from [[https://github.com/rougier/nano-emacs][rougier's N Λ N O Emacs]], starting with the theme. For
-   the white theme, I keep the light background toned down a touch.
+   I am using a lot from [[https://github.com/rougier/nano-emacs][rougier's N Λ N O Emacs]], starting with the theme.
+
+*** Theme
+
+    For the light theme, I keep the light background toned down a touch.
 
     #+BEGIN_SRC emacs-lisp
     (setq nano-light-background "#fafafa")
@@ -411,6 +414,22 @@
       (load-theme theme t))
     #+END_SRC
 
+    I want to be able to quickly switch between a light and a dark theme.
+
+    #+BEGIN_SRC emacs-lisp
+    (defun cycle-themes ()
+      "Returns a function that lets you cycle your themes."
+      (let ((themes '(nano-light nano-dark)))
+        (lambda ()
+          (interactive)
+          ;; Rotates the thme cycle and changes the current theme.
+          (let ((rotated (nconc (cdr themes) (list (car themes)))))
+            (load-theme (car (setq themes rotated)) t))
+          (message (concat "Switched to " (symbol-name (car themes)))))))
+    #+END_SRC
+
+*** Mode line
+
     This is the default setup for [[https://github.com/rougier/nano-modeline][N Λ N O Modeline]] after version 1.0.0:
 
     #+BEGIN_SRC emacs-lisp
@@ -448,19 +467,7 @@
     (add-to-list 'default-frame-alist '(internal-border-width . 24))
     #+end_src
 
-   I want to be able to quickly switch between a light and a dark theme.
-
-   #+BEGIN_SRC emacs-lisp
-   (defun cycle-themes ()
-     "Returns a function that lets you cycle your themes."
-     (let ((themes '(nano-light nano-dark)))
-       (lambda ()
-         (interactive)
-         ;; Rotates the thme cycle and changes the current theme.
-         (let ((rotated (nconc (cdr themes) (list (car themes)))))
-           (load-theme (car (setq themes rotated)) t))
-         (message (concat "Switched to " (symbol-name (car themes)))))))
-   #+END_SRC
+*** Font
 
     Pick the first of the following fonts that is installed on the system.
 
@@ -485,6 +492,8 @@
                                            ("psi" . ?ψ)))
     #+END_SRC
 
+*** Centering with Olivetti
+
     [[https://github.com/rnkn/olivetti][Olivetti]] is a package that simply centers the text of a buffer. It is very
     simple and beautiful. The default width is just a bit short.
 
@@ -1075,7 +1084,7 @@
 ** Python
 
    #+BEGIN_SRC emacs-lisp
-   (setq python-shell-interpreter "python3")
+   (setq python-shell-interpreter "python3.10")
    (add-hook 'python-mode-hook
              (lambda () (setq forward-sexp-function nil)))
    #+END_SRC