The term 'adjacency bonus' refers to the decrease in operating cost that certain buildings can bestow upon certain other buildings which are adjacent to them. A building can receive an adjacency bonus, give an adjacency bonus or do both. For the purposes of Supreme Commander, the term adjacent does not include squares which are diagonally adjacent. For example, a 1x1 square building has 4 1x1 squares next to it which are considered adjacent, each being next to one face of the 1x1 square building. Correspondingly, a 3x3 building has 12 adjacent squares. Mobile units (i.e. anything except buildings) are not capable of receiving adjacency bonuses. Adjacency bonuses are clearly represented by a thin colored line formed between two buildings. This indicates an established connection where mass