Copy Layer is a Photoshop feature that allows you to copy the contents of one layer into another. This can be useful if you want to copy a part of a photo, or if you want to create a new layer in your photo editor. To use Copy Layer, first select the layer you want to copy from. Then, click on the Copy button. The copied layer will be located in the same location as the original layer. If you want to move the copied layer, then drag it around or select it and move it using the arrow keys.