: Usually opens the main window of the application.

Seasons turned. The tray grew busier as new apps arrived and old ones left. Sometimes Pip was hidden behind an arrow, tucked away to keep the bar tidy. He missed the spotlight then, but he never doubted his purpose. One spring morning, Mara installed a new writing app and, mindful of the small things that had helped her, added a new message that read: “Thank you, little tray icon, for reminding me to answer.”

. He was an "Anticheat" program, sent to protect the city's games from hackers. Unlike the big browsers that would open and close, The Shield stayed in the tray, running silently in the background. The Conflict in the Corner

Look at the bottom-right corner of your Windows screen, or the top-right on a Mac (next to the clock). See those tiny little icons? Those are —and they’re some of the hardest-working, yet most overlooked, elements of your computer’s interface.