Minor edits

README.org

@@ -12,9 +12,9 @@
 
 Backup your =user-emacs-directory= (defaults often to =~/.emacs.d= on =Linux=,
 =Unix=, or =Darwin=) directory and execute the commands in listing
-[[lst:prepare-user-emacs-directory]].  After normal (interactive mode, no batch
+[[lst:prepare-user-emacs-directory]].  After invoking Emacs interactively (in
-mode, neither server mode), Emacs will ask you to install a selected set of
+interactive mode, neither in batch mode, nor in server mode), Emacs will ask you
-packages.  Quit Emacs and invoke Emacs again.
+to install a selected set of packages.  Quit Emacs and invoke Emacs again.
 
 #+caption[Prepare the user-emacs-directory]:
 #+caption: Clone and initialize the user-emacs-directory.
@@ -39,7 +39,7 @@ format of the presentations is [[https://www.latex-project.org/][LaTeX]].
 This [[info:org#Top][org]] file (more precisely the original [[info:org#Top][org]] source file of this file)
 illustrates three methods in my work-flow:
 1. How to tangle (or export) source blocks from [[info:org#Top][org]] files. This file contains
-     source blocks to produce the files =early-init.el=, =init.el=, =latexmkrc=,
+   source blocks to produce the files =early-init.el=, =init.el=, =latexmkrc=,
  =org-store-link=, and =example.py= by tangling.
 2. How to export [[info:org#Top][org]] files to other formats such as [[https://en.wikipedia.org/wiki/HTML][HTML]], [[https://www.latex-project.org/][LaTeX]], and [[https://en.wikipedia.org/wiki/PDF][PDF]].
 3. How [[info:org#Hyperlinks][org hyperlinks (info)]] allow to link inside and outside [[info:org#Top][Org Mode]]: hover
@@ -116,8 +116,8 @@ Try to load [[https://github.com/emacscollective/no-littering][no-littering]] as
 #+end_src
 
 In order to get help in understanding the code block above in a buffer showing
-the original [[info:org#Top][Org]] source file, type {{{kbd(C-c C-c)}}} after moving point (or
+the original [[info:org#Top][Org]] source file, type {{{kbd(C-c C-c)}}} after moving
-cursor) to one of the items of the list:
+point (or cursor) to one of the items of the list:
 1. src_emacs-lisp{(describe-variable #'load-prefer-newer t)}
 2. src_emacs-lisp{(apropos-library "no-littering")}
 3. src_emacs-lisp{(find-function #'hack-local-variables)}
@@ -1924,6 +1924,9 @@ instance [[https://numpy.org/][numpy]] and [[https://scipy.org/][scipy]].
 1. [[https://github.com/douglasdavis/numpydoc.el/blob/main/numpydoc.el][Emacs extension to insert numpy style docstrings in function definitions]]
 
 * Editing
+:PROPERTIES:
+:CUSTOM_ID: sec:editing
+:END:
 
 ** [[https://www.emacswiki.org/emacs/DisabledCommands][Enable disabled commands and inform]]
 :PROPERTIES:
@@ -2000,7 +2003,10 @@ on tables by means of =org-narrow-to-table=.
   (define-key ctl-x-map (kbd "C-n") #'narrow-or-widen-dwim)
 #+end_src
 
-** Synchronal multiple-region editing
+** [[https://github.com/victorhge/iedit#readme][Synchronal multiple-region editing]]
+:PROPERTIES:
+:CUSTOM_ID: sec:synchronal-multiple-region-editing
+:END:
 
 #+caption[Enable =iedit=]:
 #+caption: Enable =iedit=.
@@ -2010,7 +2016,10 @@ on tables by means of =org-narrow-to-table=.
     (require 'iedit nil 'noerror))
 #+end_src
 
-** Extraneous whitespace trimming
+** [[https://github.com/lewang/ws-butler#readme][Unobtrusive whitespace trimming]]
+:PROPERTIES:
+:CUSTOM_ID: sec:unobtrusive-whitespace-trimming
+:END:
 
 #+caption[Configure =ws-butler=]:
 #+caption: Configure =ws-butler=.
@@ -2102,7 +2111,7 @@ LaTeX, Org, and Python.
       (show-smartparens-global-mode +1)))
 #+end_src
 
-** Electric operators
+** [[https://github.com/davidshepherd7/electric-operator#readme][Electric operators]]
 :PROPERTIES:
 :CUSTOM_ID: sec:electric-operators
 :END:
@@ -2120,7 +2129,7 @@ code formatter for Python]].
     (add-hook 'python-mode-hook #'electric-operator-mode))
 #+end_src
 
-** Smart snippets
+** [[https://joaotavora.github.io/yasnippet/][Smart snippets]]
 :PROPERTIES:
 :CUSTOM_ID: sec:smart-snippets
 :END:
@@ -2136,8 +2145,14 @@ code formatter for Python]].
 #+end_src
 
 * [[https://lists.gnu.org/archive/html/emacs-devel/2020-04/msg00775.html][Appearance]]
+:PROPERTIES:
+:CUSTOM_ID: sec:appearance
+:END:
 
 ** [[info:emacs#Faces][Text faces (or styles)]]
+:PROPERTIES:
+:CUSTOM_ID: sec:text-faces-or-styles
+:END:
 
 See the [[https://protesilaos.com/codelog/2020-09-05-emacs-note-mixed-font-heights/][note on mixed font heights in Emacs]] for how to setup fonts properly.  It
 boils down to two rules:
@@ -2146,8 +2161,11 @@ boils down to two rules:
 2. The heights of all other faces must be real numbers to scale those heights
    with respect to the height of the face (those heights default to 1.0 for no
    scaling).
-
 The code in listing [[lst:configure-face-attributes]] source implements those rules.
+In case of proper initialization of all face heigths, font scaling is easy as
+listing [[lst:my-set-default-face-height]] shows.  Finally, the code in listing
+[[lst:my-invert-default-face]] allows swapping the foreground and background colors
+of the default face on all frames.
 
 #+caption[Configure =face-attributse=]:
 #+caption: Configure =face-attributes=.
@@ -2170,9 +2188,6 @@ The code in listing [[lst:configure-face-attributes]] source implements those ru
       (set-face-attribute 'variable-pitch nil :family "DejaVu Sans"))))
 #+end_src
 
-In case of proper initialization of all face heigths, font scaling is easy as
-the the code in [[lst:my-set-default-face-height]] shows.
-
 #+caption[Implement =my-set-default-face-height=]:
 #+caption: Implement =my-set-default-face-height=.
 #+name: lst:my-set-default-face-height
@@ -2193,9 +2208,6 @@ the the code in [[lst:my-set-default-face-height]] shows.
         (set-face-attribute 'default nil :height height))))
 #+end_src
 
-Listing [[lst:my-invert-default-face]] allows swapping the foreground and background
-colors of the default face on all frames.
-
 #+caption[Implement =my-invert-default-face=]:
 #+caption: Implement =my-invert-default-face=.
 #+name: lst:my-invert-default-face
@@ -2208,6 +2220,9 @@ colors of the default face on all frames.
 #+end_src
 
 ** [[https://jblevins.org/log/rainbow-mode][Visualize color codes and names]]
+:PROPERTIES:
+:CUSTOM_ID: sec:rainbow-mode
+:END:
 
 Listing [[lst:enable-rainbow-mode]] enables =rainbow-mode= to colorize color codes
 and names in buffers for debugging.
@@ -2231,6 +2246,9 @@ and names in buffers for debugging.
 #+end_src
 
 ** [[info:emacs#Custom Themes][Custom Themes (info)]]
+:PROPERTIES:
+:CUSTOM_ID: sec:custom-themes
+:END:
 
 This setup prefers the ~leuven~ and ~leuven-dark~ themes because the
 ~modus-operandi~ and ~modus-vivendi~ themes feel quirky: for instance those
@@ -2282,6 +2300,9 @@ themes fail to display ~hl-line-mode~ properly with Emacs-27.2 on Darwin.
 #+end_src
 
 ** [[https://karthinks.com/software/batteries-included-with-emacs/][Flash the line around point for visual feedback]]
+:PROPERTIES:
+:CUSTOM_ID: sec:flash-line-around-point
+:END:
 
 #+caption[Implement =my-pulse-one-line=]:
 #+caption: Implement =my-pulse-one-line=.
@@ -2303,8 +2324,14 @@ themes fail to display ~hl-line-mode~ properly with Emacs-27.2 on Darwin.
 #+end_src
 
 * Applications
+:PROPERTIES:
+:CUSTOM_ID: sec:applications
+:END:
 
-** Feed reader
+** [[https://github.com/skeeto/elfeed#readme][Elfeed: Emacs web feed reader]]
+:PROPERTIES:
+:CUSTOM_ID: sec:emacs-web-feed-reader
+:END:
 
 #+caption[Enable =elfeed=]:
 #+caption: Enable =elfeed=.
@@ -2335,7 +2362,10 @@ themes fail to display ~hl-line-mode~ properly with Emacs-27.2 on Darwin.
          ("https://www.lemonde.fr/blog/huet/feed/" sciences)))))
 #+end_src
 
-** Multi-media system
+** [[info:emms#Top][Emacs Multimedia System (info)]]
+:PROPERTIES:
+:CUSTOM_ID: sec:emacs-multimedia-system
+:END:
 
 #+caption[Enable =emms=]:
 #+caption: Enable =emms=.