To enable or disable the SpriteA 2D graphic objects. If you are used to working in 3D, Sprites are essentially just standard textures but there are special techniques for combining and managing sprite textures for efficiency and convenience during development. More info
See in Glossary Atlas default packing behavior:
Open the Editor settings (menu: Edit > Project Settings > Editor) and navigate to Sprite Packer > Mode.
Select the Sprite Packer Mode to determine how Unity uses the Sprite AtlasA utility that packs several sprite textures tightly together within a single texture known as an atlas. More info
See in Glossary within the Editor.