diff --git a/README.org b/README.org
index 5c8b377..396fd3b 100644
--- a/README.org
+++ b/README.org
@@ -6254,9 +6254,10 @@ configures =code-cells=.
 *** TODO Look into: editing facilities
 1. [[https://github.com/douglasdavis/numpydoc.el/blob/main/numpydoc.el][Emacs extension to insert numpy style docstrings in function definitions]]
 
-** [[https://racket-lang.org/][Racket Programming]]
+** [[https://racket-lang.org/][Racket Programming]]                                              :noexport:
 :PROPERTIES:
 :CUSTOM_ID: sec:racket-programming
+:header-args:emacs-lisp: :tangle no :eval never-export
 :END:
 
 Refer to the [[https://kchousos.github.io/posts/sicp-in-emacs/][SICP in Emacs]] post for an Emacs setup to study of [[https://web.mit.edu/6.001/6.037/sicp.pdf][Structure and
@@ -6293,9 +6294,10 @@ for instance the [[https://racket-lang.org/][Racket]] programming environment [[
 43
 #+end_src
 
-** [[https://en.wikibooks.org/wiki/Scheme_Programming][Scheme Programming]]
+** [[https://en.wikibooks.org/wiki/Scheme_Programming][Scheme Programming]]                                              :noexport:
 :PROPERTIES:
 :CUSTOM_ID: sec:scheme-programming
+:header-args:emacs-lisp: :tangle no :eval never-export
 :END:
 
 Listing [[lst:setup-geiser][Ensure Geiser installation]] supports the Scheme implementations