User guide

Painting and Drawing 133
Contiguous
Discontiguous
With "Continual" sampling (the default), the reference color is
repeatedly updated as you move the cursor. Sampling "Once" means
erasure is based on the color under the crosshair when you first click.
Use the "Background Swatch" setting to use the current background
color (Color tab) as the reference.
You also have the option of protecting the current foreground color
from erasure (Protect foreground).
If you use the tool on the Background layer, it's promoted to a standard
layer.
To erase with the Flood Eraser:
1. Select Flood Eraser from the Tools toolbar's Eraser Tools flyout.
2. (Optional) Change properties on the Context toolbar.
3. Drag with the tool on the active layer to erase pixels close in color (based on
the Tolerance range) to the color under the cursor when you first click. If
you use the tool on the Background layer, it's promoted to a standard layer.
The Tolerance setting determines the breadth of the color range to be
erased.
The Opacity setting will alter the erased areas level of transparency.