diff --git a/_config.yml b/_config.yml
index 5ebd559..0ca380e 100644
--- a/_config.yml
+++ b/_config.yml
@@ -101,9 +101,24 @@ yat:
 # Night/Dark mode
 # Default mode is "auto", "auto" is for auto nightshift
 # (19:00 - 07:00), "manual" is for manual toggle, and
-# "on/off" is for always on/off.
+# "on/off" is for default on/off.
+#
+# Whatever the user's choice is, it will supersede the
+# default setting of the site and be kept during the
+# visit (session). Only the dark mode setting is"manual",
+# it will be always kept on every visit (i.e. no matter
+# the browser is closed or not)
+#
 # night_mode: "auto"
 
+# Code badge setting
+# You can enable or disable the code badge and so on
+# code_badge:
+#   enabled: "true"
+#   color: "#fff"
+#   background_color: "#ff4e00"
+#   text_transform: "uppercase"  # ("uppercase", "lowercase", "capitalize")
+
 # If you want to link only specific pages in your header, uncomment
 # this and add the path to the pages in order as they should show up
 # header_pages: