adobe illustrator : Draw Inside, Stays inside

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In this step you'll learn about the draw inside feature and how to use it. Draw inside allows you to draw inside a shape, or group of shapes, and manipulate the contents. This is helpful for adding texture to shapes, or making complex designs. You can use the draw inside feature with the pencil tool, paint brush tool, or other tools. Additionally, you can use the pathfinder tool to unite shapes together in order to use the draw inside feature. This is useful if you want to draw inside a complex design.