Adobe Photoshop CC 2014 v.14.xx User Manual
Page 298

transparency, if the bottom layer is not a background layer).
5. To create the knockout effect, do one of the following:
Lower the fill opacity.
Using the choices in the Blend Mode menu, change the blending mode to reveal the underlying pixels.
6. Click OK.
Adobe also recommends
291
This manual is related to the following products: