The bit representation you are looking at seems to involve metadata that defines a grid size. In many applications, such metadata can refer to the structure of visual elements or layered data formats. Given the context, it's likely that the bit representation is of a number that corresponds to the dimensions (such as width and height) of a grid, which is often used in image processing, game development, or data representation.
So, the correct response to the question based on your description would be number.