Overhaul the "Scheme programming" section

README.org

@@ -4029,7 +4029,7 @@ that do not visit a file.
 :CUSTOM_ID: sec:common-lisp-programming
 :END:
 
-Links to Common Lisp programming books and posts are:
+Links to Common Lisp books and posts are:
 1. [[https://lisp-lang.org/][Common Lisp]]
 2. [[https://kvardek-du.kerno.org/][Kvardek Du - Luis Oliveira]]
 3. [[https://redirect.cs.umbc.edu/courses/331/resources/lisp/][Lisp Resources]]
@@ -5598,6 +5598,7 @@ or to increase the verbosity of [[https://github.com/python-lsp/python-lsp-serve
 | eldoc-doc-buffer        | eglot-mode-map | {{{kbd(C-h .)}}} |
 |-------------------------+----------------+------------------|
 
+#+begin_comment
 Listing [[lst:make-pylsp-server-patch]] is useful to propagate eventual patches of
 a local fork of [[https://github.com/python-lsp/python-lsp-server][python-lsp-server]].
 
@@ -5607,6 +5608,7 @@ a local fork of [[https://github.com/python-lsp/python-lsp-server][python-lsp-se
 #+begin_src shell -n :exports code :results none
   git -C $HOME/VCS/python-lsp-server diff >pylsp.patch
 #+end_src
+#+end_comment
 
 *** [[https://jedi.readthedocs.io/en/latest/][Jedi]]
 :PROPERTIES:
@@ -5661,13 +5663,28 @@ configures =code-cells=.
 :CUSTOM_ID: sec:scheme-programming
 :END:
 
-In case you install [[https://cisco.github.io/ChezScheme/][Chez Scheme]], [[https://call-cc.org/][Chicken Scheme]], [[https://www.gnu.org/software/guile/][GNU Guile]], and [[https://www.gnu.org/software/mit-scheme/][MIT/GNU Scheme]]
-with [[https://brew.sh/][Homebrew]], you have to execute the [[https://wiki.call-cc.org/emacs#using-chicken-with-emacs][Using Chicken Scheme with Emacs]] steps or
-listing [[lst:finish-chicken-install][Finish Chicken Scheme install]] to access the [[https://wiki.call-cc.org/man/5/The%20User%27s%20Manual][Chicken Scheme Manual]]
-locally.
+Listing [[lst:setup-geiser][Ensure Geiser installation]] supports the [[https://cisco.github.io/ChezScheme/][Chez Scheme]], [[https://call-cc.org/][Chicken Scheme]], and
+[[https://www.gnu.org/software/guile/][GNU Guile]] Scheme implementations and configures Geiser with [[https://cisco.github.io/ChezScheme/][Chez Scheme]] as
+default implementation.  Evaluate one of the following expressions to switch
+between those three implementations:
+1. src_emacs-lisp{(setopt scheme-default-implementation 'chicken)},
+2. src_emacs-lisp{(setopt scheme-default-implementation 'guile)},
+3. src_emacs-lisp{(setopt scheme-default-implementation 'chez)}.
+This setup does not support [[https://www.gnu.org/software/mit-scheme/][MIT/GNU Scheme]] which does not work with =ob-scheme=
+although it works with =geiser-mit=.
 
-Listing [[lst:setup-geiser][Ensure Geiser installation]] installs the support for those four Scheme
-implementations and configures Geiser with a preference for [[https://cisco.github.io/ChezScheme/][Chez Scheme]].
+The [[https://wiki.call-cc.org/emacs#using-chicken-with-emacs][Using Chicken Scheme with Emacs]] post or [[lst:finish-chicken-install][Finish Chicken Scheme install]]
+listing show how to make the [[https://wiki.call-cc.org/man/5/The%20User%27s%20Manual][Chicken Scheme Manual]] available locally in case you
+install [[https://call-cc.org/][Chicken Scheme]] with [[https://brew.sh/][Homebrew]].
+
+#+caption[Ensure =geiser= installation]:
+#+caption: Ensure =geiser= installation.
+#+name: lst:setup-geiser
+#+begin_src emacs-lisp -n
+(when (ensure-package-installation 'geiser-chez 'geiser-chicken 'geiser-guile)
+  (setopt geiser-chez-binary (executable-find "chez")
+          geiser-scheme-implementation 'chez))
+#+end_src
 
 #+caption[Finish Chicken Scheme install]:
 #+caption: Finish Chicken Scheme install.
@@ -5681,29 +5698,12 @@ cd $(csi -R chicken.platform -p '(chicken-home)')
 curl https://3e8.org/pub/chicken-doc/chicken-doc-repo-5.tgz | sudo tar zx
 #+end_src
 
-#+caption[Ensure =geiser= installation]:
-#+caption: Ensure =geiser= installation.
-#+name: lst:setup-geiser
-#+begin_src emacs-lisp -n
-(when (ensure-package-installation
-       'geiser 'geiser-chez 'geiser-chicken 'geiser-guile 'geiser-mit)
-  (setopt geiser-chez-binary (executable-find "chez")
-          geiser-scheme-implementation 'chez))
-#+end_src
-
 *** Org Babel Ackermann Scheme test
 :PROPERTIES:
 :CUSTOM_ID: sec:obas-test
 :END:
 
-Listing [[lst:obas-test][Org Babel Ackermann Scheme test]] allows to check whether the setup works
-for [[https://cisco.github.io/ChezScheme/][Chez Scheme]] by default.  To switch between [[https://call-cc.org/][Chicken Scheme]], [[https://www.gnu.org/software/guile/][GNU Guile]], or
-[[https://www.gnu.org/software/mit-scheme/][MIT/GNU Scheme]], evaluate one of the following expressions:
-1. src_emacs-lisp{(setopt scheme-default-implementation 'chicken)},
-2. src_emacs-lisp{(setopt scheme-default-implementation 'guile)},
-3. src_emacs-lisp{(setopt scheme-default-implementation 'mit)}.
-Sofar, [[https://www.gnu.org/software/mit-scheme/][MIT/GNU Scheme]] does not work with =ob-scheme=, although it works with
-=geiser-mit=.
+Listing [[lst:obas-test][Org Babel Ackermann Scheme test]] allows to check whether the setup works.
 
 #+caption[Org Babel Ackermann Scheme test]:
 #+caption: Org Babel Ackermann Scheme test.