content: tell application "System Preferences" to quit -- to skip UI animations (to work faster)
  tell application "System Preferences"
  	reveal anchor "keyboardTab" of pane "com.apple.preference.keyboard"
  end tell
  delay 0.2 -- instead of getting loading state
  tell application "System Events" to tell process "System Preferences"
  	click checkbox 3 of tab group 0 of window 1
  end tell
  tell application "System Preferences" to quit -- later, we can implement returning to previous System Preferences tab, but that sounds like overkill
  