A visual reference constrains design work by showing concrete qualities that are difficult to specify with words alone. It can demonstrate spacing, hierarchy, color relationships, component density or interaction states.
The accompanying explanation should identify which qualities matter. Without that guidance, an agent may copy incidental content or decorative details instead of the intended design pattern.
ELI5
A visual reference is a picture that shows an AI helper what kind of result you mean. A short note points out the parts worth following.
For example, a screenshot might demonstrate the desired spacing between cards and the importance of one large heading, while its exact text and photographs are irrelevant.
