State that =engrave-faces= is not ready for prime time

README.org

@@ -226,7 +226,6 @@ The [[info:emacs#Init File][init file (info)]] does not load the ~custom-file~ a
      '(async              ; asynchroneous processing
        auctex             ; Aalborg University Center TeX
        company            ; complete anything
-       engrave-faces      ; convert font-lock faces to text
        magit              ; Git Text-based User Interface
        no-littering       ; keep `user-emacs-directory' clean
        orderless          ; Emacs completion style
@@ -2118,6 +2117,27 @@ valid directories and files.  In an [[https://orgmode.org/][Org-mode]] buffer th
             (error "%s" (string-trim output))))))
 #+end_src
 
+*** [[https://github.com/tecosaur/engrave-faces#readme][Engrave Faces]]
+:PROPERTIES:
+:CUSTOM_ID: sec:engrave-faces
+:END:
+
+This package aims to produce a versatile generic core which can process a
+fontified buffer and pass the data to any number of backends to deal with
+specific output formats.
+
+I have tried to configure [[info:org#Source blocks in LaTeX export][Org source block export to LaTeX (info)]] setting
+=org-latex-src-block-backend= to =engraved= instead of =minted=, but the LaTeX
+backend chokes on multi-line documentation strings.
+
+#+caption[Ensure installation of =engrave= for experimentation]:
+#+caption: Ensure installation of =engrave= for experimentation.
+#+name: lst:ensure-engrave-installation
+#+begin_src emacs-lisp
+  (when (ensure-package-installation 'engrave-faces)
+    (message "Engrave-faces chokes on multi-line documentation strings."))
+#+end_src
+
 *** [[info:org#Adding Hyperlink Types][Making Org hyperlink types (info)]]
 :PROPERTIES:
 :CUSTOM_ID: sec:making-org-hyperlink-types