diff --git a/README.org b/README.org
index 57491ab..9ac4aef 100644
--- a/README.org
+++ b/README.org
@@ -337,6 +337,37 @@ background.
     "My face to show a here-document.")
 #+end_src
 
+** [[info:emacs#Dired][Dired: directory editor as file manager (info)]]
+:PROPERTIES:
+:CUSTOM_ID: sec:file-manager
+:END:
+
+Listing [[lst:customize-dired]] makes the directory editor sort entries
+alphabetically after grouping the directories before grouping the files by
+extension.
+
+#+caption[Customize =dired=]:
+#+caption: Customize =dired=.
+#+name: lst:customize-dired
+#+begin_src emacs-lisp
+  (with-eval-after-load 'dired
+    (custom-set-variables
+     ;; | switch | action                                 |
+     ;; |--------+----------------------------------------|
+     ;; | -a     | also list hidden entries               |
+     ;; | -l     | use a long listing format              |
+     ;; | -X     | sort alphabetically by entry extension |
+     ;; | -G     | skip long listing format group names   |
+     ;; | -1     | list one entry per line                |
+     '(dired-listing-switches "-alGX1 --group-directories-first")))
+
+  (with-eval-after-load 'files
+    (custom-set-variables
+     ;; Ensure the use of `GNU-ls' from `coreutils' on darwin.
+     '(insert-directory-program (or (executable-find "gls")
+                                    (executable-find "ls")))))
+#+end_src
+
 * [[info:emacs#Package Installation][Install the selected packages (info)]]
 :PROPERTIES:
 :CUSTOM_ID: sec:install-selected-packages
@@ -1217,6 +1248,18 @@ and =org=.
 :CUSTOM_ID: sec:making-org-hyperlink-types
 :END:
 
+Listing [[lst:customize-org-link]] configures =org-link= to use relative file path
+links.
+
+#+caption[Customize =org-link=]:
+#+caption: Customize =org-link=.
+#+name: lst:customize-org-link
+#+begin_src emacs-lisp
+  (with-eval-after-load 'ol
+    (custom-set-variables
+     '(org-link-file-path-type 'relative)))
+#+end_src
+
 Listing [[lst:org-ref-like-org-link-types]] defines =org-link= types for backwards
 compatibility with [[https://github.com/jkitchin/org-ref][org-ref]].  Listing [[lst:define-org-pdfview-link-type]] uses ideas
 from the definition of =docview-org-link= and =doi-org-link= types to define an