A cutting list (also called a Bill of Materials, BOM) tabulates every piece of steel needed to fabricate the gate. Each row gives the section profile (e.g. 50x25x2.0 RHS), the length, the count needed, and any cut angle (45 degree mitre at each end, square cut at one end and mitre at the other, etc).
A good cutting list lets the workshop cut the entire gate's steel from raw stock without referring back to the drawings. The welder then takes the cut pieces, marks them by their list reference, and assembles them in the order of the welding sequence.
CAD60 generates a cutting list as part of the drawing pack on Fabricator and Fleet tiers. The list is sorted by profile so the saw operator can change blades and stock between groups, not row by row.