1) Micro/macro readings present data at multiple scales within a single image, allowing users to get a broad overview and see important details.
2) Maps are a common example, showing both geographical context and local information.
3) Effective micro/macro design gives meaning through relative scale, such as the Vietnam Veterans Memorial showing both the total deaths and individual names.
4) While challenging to design well, micro/macro visualizations optimize how information is conveyed by avoiding separate screens or context switching.