diff --git a/examples/Brewfile b/examples/Brewfile
index 0fc4435..5b091ce 100644
--- a/examples/Brewfile
+++ b/examples/Brewfile
@@ -42,9 +42,9 @@ brew "glibc" if OS.linux?
 # set arguments for all 'brew install --cask' commands
 cask_args appdir: "~/Applications", require_sha: true
 
-
 # 'brew install --cask'
 cask "aldente"
+cask "bluesnooze"
 cask "desmume"
 cask "docker"
 cask "firefox"
diff --git a/knowledge base/mac os x/defaults.md b/knowledge base/mac os x/defaults.md
index 74b1521..17bbfec 100644
--- a/knowledge base/mac os x/defaults.md	
+++ b/knowledge base/mac os x/defaults.md	
@@ -53,7 +53,7 @@ defaults write 'com.apple.desktopservices' 'DSDontWriteNetworkStores' true
 
 
 # Delete values.
-# This resets changes done previously.
+# This resets changes done previously (a.k.a. restores defaults).
 # defaults delete 'domain'
 # defaults delete 'domain' 'key'
 defaults delete 'com.apple.dock'
@@ -66,6 +66,14 @@ defaults delete 'com.apple.dock' 'springboard-columns'
 defaults write 'com.apple.dock' 'ResetLaunchPad' -bool 'TRUE'
 ```
 
+```sh
+# Hide Bluesnooze's menu bar icon.
+defaults write 'com.oliverpeate.Bluesnooze' 'hideIcon' -bool true && killall 'Bluesnooze'
+
+# Restore Bluesnooze's menu bar icon.
+defaults delete 'com.oliverpeate.Bluesnooze' 'hideIcon' && killall 'Bluesnooze'
+```
+
 > **Note:** once set something related to the dock, one'll probably need to restart it with `killall Dock`.
 
 ## Further readings