[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] value-added change, project control and 2nd variable costs variance, project control and vendors source selection 2nd 3rd 4th verification scope verification quality control comparison |