ABSTRACT
After learning about selections, the next real hurdle for the digital image-maker is probably to learn
all about layers.
What is a layer? A layer is simply one picture sitting directly on top of another. Layers can be
whole photos, text, vector drawings, scanned art or anything else that can be digitised. You can add
as many layers as you want in one document, depending on your requirements. The reason for
building up these layers is to maintain the pictures’ editability. While a picture retains its layers, it
can always be edited. Flatten (or squash) those layers, so that it can be emailed, for example, and you
lose the power to edit it.
