The keyword in this standard is A drawing that looks perfect on an A0 sheet in a clean design office may be illegible or misleading in a muddy, noisy, or low-light construction environment.
The standard provides a common visual language for architects and engineers to ensure drawings are clear, precise, and unambiguous. ISO - International Organization for Standardization Hierarchy of Drawings: Bs En Iso 7519 Pdf
The document covers several critical areas of technical documentation: BS EN ISO 7519:1997 | 15 Oct 1997 - BSI Knowledge The keyword in this standard is A drawing