+`code --install-extension api-notation`
+
+### From GUI
+
+#### Open the Extension Manager from Palette Manager
+
+1. Press `⌘⇧P` on OSX or `⌃⇧P` on Windows/Linux to open the palette manager
+2. Look for `Install Ext4ensions
+
+#### Open the Package Manager from Preferences
+
+1. Go to `Code -> Preferences -> Extensions` menu item
+
+#### Install it
+
+1. Search for `api-notation` in the search bar
+2. Click Install
+