Stud positions → reserve → stock boards
Stud spacing defines base positions; corners/openings and reserve studs are separate. This remains a material-count planner, not structural/code design.
Use the product label as the final purchase input
Coverage, package size, density, pattern repeat and usable yield vary by manufacturer and material. v265 keeps these values editable and shows rounding/overage explicitly instead of presenting a default as a hidden certainty.