Exercise 3: Split and Compare — Possible Solution
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STEPS
------------------------------
1. Open a terminal with Ctrl+`.
2. Press Ctrl+Shift+5 (or click the split icon in the terminal
   panel's top-right). The panel now shows two terminal panes,
   side by side.
3. In the LEFT pane, start a command that produces ongoing output,
   for example:
       ping example.com
   (or, on a system where ping runs forever by default, ping -t
   example.com on Windows) — this keeps printing new lines
   continuously rather than finishing immediately.
4. Click into the RIGHT pane and run ordinary one-off commands there
   — e.g. "dir"/"ls", or "echo test" — while the left pane keeps
   printing new ping output in the background, visible in the same
   panel the whole time.
5. When finished, click back into the left pane and press Ctrl+C to
   stop the ping command.

WHY THIS WORKS AS AN ANSWER
------------------------------
Ctrl+Shift+5 reuses the exact split shortcut this chapter names,
producing two terminal panes visible SIMULTANEOUSLY, side by side —
different from Exercise 1's two separate terminals reached one at a
time via a dropdown. This is the specific scenario the chapter
describes splitting as being useful for: "watching a running
process's output in one pane while typing commands in the other,
without switching back and forth."

Choosing a genuinely long-running command (ping, rather than
something that finishes instantly) for the left pane is what makes
the "watch one thing while working in the other" behavior actually
observable — a command that finished immediately wouldn't demonstrate
anything different from Exercise 1's two independent terminals.