Example 08 is a bounded public reference runtime/UI-binding example for an Enum widget roundtrip, validated across the C++, Python, and Rust reference runtime families.
The diagram copies mode_input.value to mode_result.value through the public mode_value -> result_mode surface. The .frog file owns the front-panel instance, including widget position and per-instance style parameters. The visible front panel must consume ui/enum_panel.wfrog and the shared Default Enum realization asset; a hardcoded HTML-only replacement is not a valid implementation.