When modifying an assembly, what action indicates a need for updating the drawing?

In the context of modifying an assembly in Solid Edge, the appearance of heavy gray corners is a visual indicator that the drawing is out of date and requires an update. This typically occurs when changes are made to the assembly itself, such as altering component positions, adding or removing components, or modifying geometries. These updates in the assembly directly affect the referenced drawing, necessitating a revision to ensure all views reflect the most current assembly data.

Updating the drawing provides clarity and ensures accuracy in representation, which is vital for effective communication in engineering and manufacturing contexts. The heavy gray corners serve as a prompt to the user, signaling that discrepancies exist between the assembly model and its associated drawing. Addressing this visual cue by updating the drawing maintains consistency and precision in the documentation associated with the assembly.