What does a Non-RVSM indicator look like according to B4 Computer Generated Altitude Qualifiers?

In the context of B4 Computer Generated Altitude Qualifiers, a Non-RVSM (Reduced Vertical Separation Minimum) indicator is represented by a coral box. This visual cue is critical for air traffic controllers, as it signifies that the aircraft is not compliant with RVSM standards, which are designed to maintain safe altitude separation between aircraft flying at higher altitudes.

Using a coral box allows for quick identification and differentiation from other altitude qualifiers, helping controllers manage traffic effectively. The other colors, such as yellow or green, may indicate compliant statuses or different types of advisories, but the coral box specifically denotes the non-compliance aspect, which is essential for ensuring safety in air traffic management.