It would be nice if there could be a tutorial on the wiki that explains what sprite sheets are, why they are advantageous to use (i.e. more performant compared to separate textures, can be used to create animated UI elements), and how they can be implemented in ROBLOX using ImageRectOffset/Size properties of ImageLabel/ImageButton.
Right now the words “sprite sheet” / “spritesheet” are not present on the wiki, and the property description of ImageRectOffset/ImageRectSize is very meagre, so I think it would be beneficial to have a short description in the context of ROBLOX game development about the topic.