49A1 [Buyer's right to avoid contract (grounds for avoidance): fundamental breach of contract];

51B [Delivery or conformity of only part of goods (avoidance as to entire contract): buyer only permitted to avoid part of contract];

74B [Outer limits of damages (as possible consequence of breach): causal connection not established];

81B2 [Contract clauses not terminated by avoidance: clauses on rights of parties consequent upon avoidance]