A block-by-block reference for the 18 categories in the block editor toolbox. Each block is listed with its picture, what it does, and the data types of its inputs and outputs. The content is the same as the tooltip shown when hovering over a block in the app. Types are written in square brackets (for example, value1 [Number]), and the data types are the same as the variable types. For how to use the block editor and the common rules, see Part 8, Block Coding; for the category overview, see Blocks.