Using the Auto Erase option

The Auto Erase option for the Pencil tool lets you paint the background color over areas containing the foreground color.

To use the Auto Erase option:

1. Specify foreground and background colors. (See Choosing foreground and background colors.)
2. Select the Pencil tool .
3. Select Auto Erase in the options bar.
4. Drag over the image.

If the center of the cursor is over the foreground color when you begin dragging, the area is erased to the background color. If the center of the cursor is over an area that doesn't contain the foreground color when you begin dragging, the area is painted with the foreground color.