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Review questions

Q1: Once you've made a selection, what area of the image can be edited?
A1: Only the area within the selection can be edited.
Q2: How do you add to and subtract from a selection?
A2: To add to a selection, hold down Shift, and then drag or click the active selection tool on the area you want to add to the selection. To subtract from a selection, hold down Alt (Windows) or Option (Mac OS), and then drag or click the active selection tool on the area you want to remove from the selection.
Q3: How can you move a selection while you're drawing it?
A3: Without releasing the mouse button, hold down the spacebar, and drag to reposition the selection.
Q4: When drawing a selection with the lasso tool, how should you finish drawing the selection to ensure that the selection is the shape you want?
A4: To make sure that the selection is the shape you want, end the selection by dragging across the starting point of the selection. If you start and stop the selection at different points, Photoshop or ImageReady draws a straight line between the start point of the selection and the end point of the selection.
Q5: How does the magic wand tool determine which areas of an image to select? What is tolerance, and how does it affect a selection?
A5: The magic wand selects adjacent pixels based on their similarity in color. The Tolerance setting determines how many color tones the magic wand will select. The higher the tolerance setting, the more tones the magic wand selects.


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