Exercise 2: Snap Layouts & Why the Taskbar Gap Is Functional, Not Cosmetic — Possible Solution
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USING SNAP LAYOUTS TO ARRANGE THREE WINDOWS
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Hovering the maximize button of a first window (or pressing Win + Z)
reveals the layout grid; choosing a three- or four-slot layout and
clicking a slot snaps that window into place. Windows then highlights
the remaining empty slot(s) and lets you click through your other open
windows to fill each one in turn - three windows arranged on screen in
a few clicks, with no manual dragging or resizing required.

WHAT A "COSMETIC" DIFFERENCE WOULD MEAN
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A purely cosmetic difference would be something like centered icons
versus left-aligned icons on the taskbar - the same capability,
presented with a different visual arrangement. The user's actual
available actions wouldn't change.

WHY THE MISSING VERTICAL MODE AND DRAG-AND-DROP ARE DIFFERENT
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Per this chapter, Windows 11's taskbar has "no built-in support for a
vertical taskbar or dragging files directly onto a taskbar icon, both
of which worked in Windows 10." These aren't visual-style changes -
they're capabilities that existed in Windows 10 and simply don't exist
in Windows 11's taskbar at all. A user who relied on dragging a file
onto a pinned application icon to open it in that app, or who ran a
vertical taskbar on an ultrawide monitor for more horizontal screen
space, has lost an actual, repeatable action they could previously
take - not just a different-looking version of the same action.

WHY THIS MATTERS FOR THE CHAPTER'S OWN WARNING
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This is exactly the distinction behind the chapter's own warn-box:
"'It's just Windows 10 with rounded corners' is a costly assumption."
Assuming the taskbar works the same way it always has means a support
engineer might tell a user to "just drag the file onto the icon like
before" - a real, actionable step in Windows 10 that simply fails,
silently, in Windows 11.

WHY THIS WORKS AS AN ANSWER
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It describes the actual Snap Layouts workflow concretely, defines what
a genuinely cosmetic difference would look like as a contrast, and
explains specifically why losing an available user action (not just a
visual change) is what makes the taskbar gap functional rather than
cosmetic - tying that distinction back to the chapter's own explicit
warning.