Improve text explaining the last commit

README.org

@@ -2245,8 +2245,10 @@ list detailing and motivating each listing:
 2. Listing [[lst:setup-org-babel]] handles basic [[https://orgmode.org/][Org-mode]] options specific to
    [[info:org#Working with Source Code][work with source code (info)]].
 3. Listing [[lst:ob-tangle-plus]] extends [[info:org#Noweb Reference Syntax][source code export (info)]] with the
-   possibility to tangle Emacs Lisp files into a directory specified by a
-   top-level variable.
+   possibility to tangle of for instance Emacs Lisp files (or other programming
+   mode files) into a directory specified by ~org-babel-post-tangle-dir~ which
+   can be changed using =org-get-entry= to read lines like ~#+property:
+   tangle-dir: ANY-PLACE~ near the beginning an Org file.
 4. Listing [[lst:set-org-link-options]] handles [[https://orgmode.org/][Org-mode]] options specific to
    [[info:org#Hyperlinks][hyperlinks (info)]].
 5. Listing [[lst:setup-org-mode-map]] extends the =org-mode-map= with useful
@@ -2334,14 +2336,15 @@ list detailing and motivating each listing:
     (setopt org-babel-lisp-eval-fn #'sly-eval)))
 #+end_src
 
-#+caption[Add extra functionality to =ob-tangle=]:
-#+caption: Add extra functionality to =ob-tangle=.
+#+caption[Change the =org-babel-tangle= destination to a specific directory]:
+#+caption: Change the =org-babel-tangle= destination to a specific directory.
 #+name: lst:ob-tangle-plus
 #+begin_src emacs-lisp -n
 (with-eval-after-load 'emacs
   ;; Modified from https://emacs.stackexchange.com/a/61364 which replies to
   ;; https://emacs.stackexchange.com/questions/61359/
   ;; "How to specify a directory to tangle all code blocks into".
+  ;; Org usage example, add a line: #+property: tangle-dir ./site-lisp/
 
   (defcustom org-babel-post-tangle-dir nil
     "Destination directory used by `dir+org-babel-post-tangle'.