Collapse the Program You're In
The program you’re in can now fold its apps away in the sidebar. Click the arrow beside the program’s name to hide its apps, and click it again to show them. You stay in the program, and the rest of your programs move up so they’re easier to reach.
Each program remembers your choice in this browser: a program you collapsed stays collapsed when you reload or come back to it, and other programs still open with their apps. It works the same way in the phone drawer.
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