Copying part of an image and using it to replace unwanted parts of the image.
Cutting out part of an image
Used to apply special effects to an image that would be too difficult to create manually
Filling an object/image with a smooth transition from one color to another.
Compiling multiple pictures or objects together into one image
Patterns & Textures
Patterns - raster graphics used to fill an object or selection. Textures - used to create filters and backgrounds.
Pivoting an object around its center point
Removing the background color of a raster image making it "see-through" in order to allow the image to blend in with its background.