Reorganize code and text of the "Setup Org" section

README.org

@@ -1919,15 +1919,15 @@ Emacs will complain that ~TeX-master~ is no safe local variable in case it reads
 a LaTeX file that sets ~TeX-master~.  The list below summarizes the main [[https://en.wikipedia.org/wiki/AUCTeX][AUCTeX]]
 configuration objectives:
 1. Listing [[lst:set-tex-options]] ensures installation of [[https://en.wikipedia.org/wiki/AUCTeX][AUCTeX]] and initializes
-   [[https://en.wikipedia.org/wiki/AUCTeX][AUCTeX]] properly for =LuaTeX= or =LuaLaTeX=.  Listing [[lst:set-tex-options]] also
-   enables *indenting between square brackets* which is a recent feature.
+   [[https://en.wikipedia.org/wiki/AUCTeX][AUCTeX]] properly for Lua-TeX or Lua-LaTeX.  Listing [[lst:set-tex-options]]
+   also enables *indenting between square brackets* which is a recent feature.
 2. Listing [[lst:set-latex-related-options]] configures the Emacs =bibtex= library
-   to use the LaTeX =BiBTeX= dialect for backwards compatibility, disables font
-   scaling of section titles, and configures =latex= for a full featured
+   to use the LaTeX BibTeX dialect for backwards compatibility, disables font
+   scaling of section titles, and configures LaTeX for a full featured
  =LaTeX-section-command=.
 
-#+caption[Ensure =AUCTeX= installation and set =TeX= option]:
-#+caption: Ensure =AUCTeX= installation and set =TeX= option.
+#+caption[Ensure =AUCTeX= installation and set TeX options]:
+#+caption: Ensure =AUCTeX= installation and set TeX options.
 #+name: lst:set-tex-options
 #+begin_src emacs-lisp -n :results silent
 (when (ensure-package-installation 'auctex)
@@ -1943,8 +1943,8 @@ configuration objectives:
      TeX-electric-math nil)))
 #+end_src
 
-#+caption[Set =LaTeX= options]:
-#+caption: Set =bibtex= options.
+#+caption[Set BibTeX and LaTeX options]:
+#+caption: Set BibTeX and LaTeX options.
 #+name: lst:set-latex-related-options
 #+begin_src emacs-lisp -n :results silent
 (with-eval-after-load 'bibtex
@@ -2006,7 +2006,7 @@ Links to Org-mode videos are:
 :ID:       0D725DA1-7431-40BD-85FF-EFF4F7E4EC95
 :END:
 
-I have split the initial [[https://orgmode.org/][Org-mode]] setup over eleven listings.  Here, follows a
+I have divided the initial [[https://orgmode.org/][Org-mode]] setup into eleven listings.  Here, follows a
 list detailing and motivating each listing:
 1. Listing [[lst:set-org-options]] handles basic [[https://orgmode.org/][Org-mode]] options.
 2. Listing [[lst:org-capture-templates]] initializes a simple capture template.
@@ -2023,10 +2023,11 @@ list detailing and motivating each listing:
    constant declared "private" by two dashes in its name!
 8. Listing [[lst:set-org-export-options]] selects the =non-intrusive= expert user
    interface for export dispatching.
-9. Listing [[lst:setup-org-for-lualatex-export]] and
-   [[lst:set-ox-latex-options-for-lualatex-export]] configure [[https://orgmode.org/][Org-mode]] to generate
-   output for the LuaLaTeX compiler.
-# 10. Listing [[lst:setup-org-latex-classes]] defines [[info:org#LaTeXspecificexportsettings][org-latex-classes (info)]] for
+9. Listing [[lst:setup-org-for-lualatex-preview]] allows [[https://orgmode.org/][Org-mode]] to generate
+   preview =png= images with Lua-LaTeX and ImageMagick.
+10. Listing [[lst:set-ox-latex-options-for-lualatex-export]] configures [[https://orgmode.org/][Org-mode]] to
+    generate output for Lua-LaTeX.
+# 11. Listing [[lst:setup-org-latex-classes]] defines [[info:org#LaTeXspecificexportsettings][org-latex-classes (info)]] for
 #     backward compatibility.  For an explanation of the code in listing
 #     [[lst:setup-org-latex-classes]], type {{{kbd(C-h v org-latex-classes)}}}.
 
@@ -2058,6 +2059,18 @@ list detailing and motivating each listing:
                    ("\\.mm\\'" . default)
                    ("\\.x?html?\\'" . default)
                    ("\\.pdf\\'" . emacs))
+   org-latex-default-packages-alist '(("" "fontspec" t ("lualatex"))
+                                      ("AUTO" "inputenc" t ("pdflatex"))
+                                      ("T1" "fontenc" t ("pdflatex"))
+                                      ("" "graphicx" t)
+                                      ("" "longtable" nil)
+                                      ("" "wrapfig" nil)
+                                      ("" "rotating" nil)
+                                      ("normalem" "ulem" t)
+                                      ("" "amsmath" t)
+                                      ("" "amssymb" t)
+                                      ("" "capt-of" nil)
+                                      ("" "hyperref" nil))
    org-modules (list 'ol-bibtex 'ol-doi 'ol-eww 'ol-info
                      'org-id 'org-protocol 'org-tempo)
    org-use-property-inheritance t))
@@ -2289,9 +2302,9 @@ def __org_babel_python_format_value(result, result_file, result_params):
   (setopt org-export-dispatch-use-expert-ui t))
 #+end_src
 
-#+caption[Setup =org= for export to LuaLaTeX]:
-#+caption: Setup =org= for export to LuaLaTeX.
-#+name: lst:setup-org-for-lualatex-export
+#+caption[Setup =org= for preview using Lua-LaTeX]:
+#+caption: Setup =org= for preview using Lua-LaTeX.
+#+name: lst:setup-org-for-lualatex-preview
 #+begin_src emacs-lisp -n :results silent
 (with-eval-after-load 'org
   ;; https://list.orgmode.org/87o84fd4oi.fsf@posteo.net/
@@ -2310,24 +2323,11 @@ def __org_babel_python_format_value(result, result_file, result_params):
      ("lualatex -interaction nonstopmode -output-directory %o %f")
      :image-converter
      ("convert -density %D -trim -antialias %f -quality 100 %O")))
-  (setopt
-   org-preview-latex-default-process 'luamagick
-   org-latex-default-packages-alist '(("" "fontspec" t ("lualatex"))
-                                      ("AUTO" "inputenc" t ("pdflatex"))
-                                      ("T1" "fontenc" t ("pdflatex"))
-                                      ("" "graphicx" t)
-                                      ("" "longtable" nil)
-                                      ("" "wrapfig" nil)
-                                      ("" "rotating" nil)
-                                      ("normalem" "ulem" t)
-                                      ("" "amsmath" t)
-                                      ("" "amssymb" t)
-                                      ("" "capt-of" nil)
-                                      ("" "hyperref" nil))))
+  (setopt org-preview-latex-default-process 'luamagick))
 #+end_src
 
-#+caption[Set =ox-latex= options for export to LuaLaTeX]:
-#+caption: Set =ox-latex= options for export to LuaLaTeX.
+#+caption[Set =ox-latex= options for export to Lua-LaTeX]:
+#+caption: Set =ox-latex= options for export to Lua-LaTeX.
 #+name: lst:set-ox-latex-options-for-lualatex-export
 #+begin_src emacs-lisp -n :results silent
 (when (require 'ox-latex nil 'noerror) ;; To use the safe file local variables!