Paint > Cutting and Pasting in Paint > Pasting Cutouts >
The Blend Options

The Blend options are similar to the commands in the Processing menu. They use the RGB values of the cutout and those of the result image. Select a blend option from the Blend Mode box.

(a) Blend Mode box

Blend
  Pastes the cutout onto the result image.
Add
  Adds the RGB values of the corresponding pixels in the cutout and the result image. Values greater than 255 are clipped.
Subtract
  Subtracts the RGB values of pixels in the image from those of the cutout. Values less than 0 are clipped.
Black
  Pastes a black object in the shape of the cutout on the result image.
White
  Pastes a white object in the shape of the cutout on the result image.
Colour
  Pastes a coloured object in the shape of the cutout on the result image. The current colour is used for the object.
NAdd Min
  Compares the brightness values of corresponding pixels in the cutout and the result image, and uses the pixel with the smaller value in the tacked down cutout.
NAdd Max
  Compares the brightness values of corresponding pixels in the cutout and the result image, and uses the pixel with the greater value in the tacked down cutout.
Multiply
  Multiplies the RGB values of corresponding pixels in the cutout and the result image. The value is normalized by dividing the result by 255.