A: It means:

The is a French national standard established by AFNOR (Association Française de Normalisation) that defines general dimensional and geometrical tolerances for cut and bent workpieces made from flat metal products . This standard is essential for engineering and manufacturing industries, particularly in sheet metal working, where individual tolerances are not specifically noted on a technical drawing.

It specifically applies to workpieces produced by cutting (stamping, laser, plasma) and bending (folding).

is the French national adoption of the international standard ISO 8015 . It is officially titled "Geometrical Product Specifications (GPS) — Fundamentals — Concepts, principles and rules" .

is a French standard (Norme Française) issued by AFNOR (Association Française de Normalisation). Its full title typically relates to the "Technical drawings. Simplified representation."