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.

4 Drag over the image.

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

Painting and Drawing > Erasing > Using the Auto Erase option