diff --git a/core/fg42/build/core.el b/core/fg42/build/core.el
index 39ab807..4749f5e 100644
--- a/core/fg42/build/core.el
+++ b/core/fg42/build/core.el
@@ -92,6 +92,7 @@ The build system will consum these details for various purposes."
 
 
 (defmacro command-> (command-var args-var &rest body)
+
   (declare (indent defun))
   `(defun main ()
      "The entry point to the build script."
diff --git a/core/fg42/build/docs.el b/core/fg42/build/docs.el
index db83314..466af56 100644
--- a/core/fg42/build/docs.el
+++ b/core/fg42/build/docs.el
@@ -65,7 +65,7 @@
 
 
 (defun fg42/build-prepare-docs (build-dir host)
-  "Prepare the documents and the website in the given BUILD-DIR."
+  "Prepare the documents and the website in the given BUILD-DIR and HOST."
 
   ;; Build the org files for each cube
   (message "Processing the docs for all the cubes")
diff --git a/core/fg42/build/ox-template.el b/core/fg42/build/ox-template.el
index 03171ac..983b55a 100644
--- a/core/fg42/build/ox-template.el
+++ b/core/fg42/build/ox-template.el
@@ -121,7 +121,7 @@ call `org-html-render-tag-template' otherwise will call ORIG-FN."
                  ("base-url" (plist-get info :base-url))
                  ("preamble" (org-html--build-pre/postamble 'preamble info))
                  ("title" (get-file-global-props (plist-get info :input-file) "TITLE"))
-                 ("version" (fg42/version))
+                 ("version" (fg42/project-version))
                  ("description" (or (get-file-global-props (plist-get info :input-file) "DESC")
                                     ""))
                  ("postamble" (org-html--build-pre/postamble 'postamble info)))))
diff --git a/core/fg42/build/rss.el b/core/fg42/build/rss.el
index a703647..64b3a64 100644
--- a/core/fg42/build/rss.el
+++ b/core/fg42/build/rss.el
@@ -29,7 +29,7 @@
 (require 'fg42/build/core)
 
 (defun fg42/rss-map-items (file-and-props link)
-  "Create a RSS item from the given org FILE with the give http LINK"
+  "Create a RSS item from the given org FILE with the give http LINK."
   (let* ((file (car file-and-props))
          (values (cadr file-and-props)))
     (format
@@ -66,7 +66,7 @@
            (nth 2 post))))
 
 (defun fg42/rss-create (posts base-url dest)
-  "Create a RSS xml file via POSTS for the give BASE-URL and save to DEST"
+  "Create a RSS xml file via POSTS for the give BASE-URL and save to DEST."
   (with-temp-file dest
     (insert
      (format
@@ -86,8 +86,9 @@
       (mapconcat
        (lambda (post)
          (fg42/rss-create-item post base-url))
-       posts)))))
+       posts
+       "")))))
 
 
 (provide 'fg42/build/rss)
-;;; docs.el ends here
+;;; rss.el ends here
diff --git a/core/fg42/build/utils.el b/core/fg42/build/utils.el
index 3ece7f4..ec0a046 100644
--- a/core/fg42/build/utils.el
+++ b/core/fg42/build/utils.el
@@ -59,17 +59,21 @@
     (insert-file-contents file)
     (get-buffer-global-props prop)))
 
+(defmacro with-cwd (path &rest body)
+  "Run the BODY with PATH as the current working dir."
+  `(let ((cwd (getenv "PWD"))
+         (default-directory ,path))
+     (cd default-directory)
+     (prog1
+         ,@body
+       (cd cwd))))
 
 (defun fg42/exctract-keywords (file keys)
-  "Create a RSS item from the given org FILE"
-  (let ((cwd (getenv "PWD"))
-        (old-org-directory org-directory))
-    (cd fg42/build-project-root)
-    (prog1
-        (with-temp-buffer
-          (insert-file-contents file)
-          (org-collect-keywords keys))
-      (cd cwd))))
+  "Create a RSS item from the given org FILE for the give KEYS."
+  (with-cwd (file-name-directory file)
+            (with-temp-buffer
+              (insert-file-contents file)
+              (org-collect-keywords keys))))
 
 
 (defun pair-file-with-date (file)
@@ -87,15 +91,20 @@
 
 
 (defun fg42/git-branch ()
-  (cd fg42/build-project-root)
-  (shell-command-to-string "git branch --show-current"))
+  "Return the branch name of the project."
+  (let ((default-directory fg42/build-project-root))
+    (shell-command-to-string "git branch --show-current")))
 
 
+(defun fg42/project-version ()
+  "Return the current version of the project."
+  (let ((default-directory fg42/build-project-root))
+    (shell-command-to-string (format "git describe %s" (fg42/git-branch)))))
+
 (defun fg42/version ()
-  "Returns the current version of FG42."
-  (cd fg42/build-project-root)
-  (shell-command-to-string (format "git describe %s" (fg42/git-branch))))
-
+  "Return the current version of the project."
+  (let ((default-directory (getenv "FG42_HOME")))
+    (shell-command-to-string (format "git describe %s" (fg42/git-branch)))))
 
 (provide 'fg42/build/utils)
 ;;; utils.el ends here
diff --git a/docs/videos.org b/docs/videos.org
index 8127542..9faddb8 100644
--- a/docs/videos.org
+++ b/docs/videos.org
@@ -705,7 +705,8 @@ Never evaluate the arguments of a macro manually. E.g. with =eval=
 
 More info: https://www.gnu.org/software/emacs/manual/html_node/elisp/Eval-During-Expansion.html
 ** What's next?
-* Episode 12 - Features & Load Paths
+* DONE Episode 12 - Features & Load Paths
+CLOSED: [2023-01-14 Sat 11:44]
 ** Emacs Lisp files
 Write elisp code in files with =.el= suffix.
 
@@ -777,3 +778,4 @@ We can clone a library somewhere on the disk and add the path to it to the =load
 and load the library files.
 
 But that would be tedious to do so for all the libraries. That's why we use a package manager
+* Episode 13 - Hooks