The discussion highlights concerns about the visibility of macro definitions in MCNP modeling when viewed in Vised. Users are encouraged to verify the placement of each cell and ensure that macro bodies do not overlap unexpectedly. It is important to check the origin settings in Vised to confirm that cells are positioned correctly. Additionally, users should review the manual for guidance on the intended configuration of macro bodies, especially when they are at angles. Proper debugging and understanding of the model setup are essential for accurate results.