Tip
You can customize the Tools panel by arranging, removing, and adding tools. To do this,
hold down the Edit Toolbar icon just below the Zoom tool, and choose Edit Toolbar.
Click the double arrows just above the Tools panel to toggle to a double-column view.
Click the double arrows again to return to a single-column Tools panel and use your screen
space more efficiently.
Examine the status bar at the bottom of the work area (Windows) or image window (Mac),
and notice the percentage that appears on the far left. This represents the current