====== Ayatana Indicators ======
  * https://ayatanaindicators.github.io
  * [[https://wiki.ubuntu.com/DesktopExperienceTeam/ApplicationIndicators|DesktopExperienceTeam/ApplicationIndicators - Ubuntu Wiki]]
  * [[linux:mint:mate|Linux Mint Mate(마테) Desktop]], [[linux:xfce|XFCE]] 등에서 사용할 수 있는 App Indicator