Blend Modes
The way that layers interact with other layers in the stack is determined by the Blending mode of the upper layer.
By default the layer’s mode is set to Normal, which causes the picture content on the upper layer to obscure the picture parts beneath, but Photoshop Elements has many other ways (modes) to control how these pixels interact.
Called Blend modes, the different options provide a variety of ways to control the mixing, blending and general interaction of the layer content.
In the following Blend mode examples the picture has ...
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