This may be a simple question, but since I started using tk2d I have have seen atlas used many times, especially in a sprite collection. So what exactly is meant by a atlas? I know the word itself is defined as a collection of maps or charts, but can also mean the size of a drawing or piece of paper. Is that what is meant by sprite atlas, meaning the size of the sprite?
Thanks for any help and yes I am fairly new to both Unity and tk2d