To erase a large area

1. In the toolbox, click to erase a rectangular area, or click to work with a free-form area.
2. Hold down the left mouse button and drag the pointer to select the area you want to erase.
3. The eraser color is the same as the background color shown in the color box at the bottom of the toolbar. Right-click a color in the color box if the color you want to erase with is different than the current background color.
4. On the Edit menu, click Clear Selection.