25B [Definition of fundamental breach: substantial deprivation of expectation, etc.];

64A [Seller's right to avoid contract: grounds for avoidance];

74A [General rule for measuring damages: loss suffered as consequence of breach];

75A1 [Damages established by substitute transaction after avoidance: resale by aggrieved seller];

76A [Damages based on current price: avoidance without purchase or resale under article 75];

77A [Obligation to take reasonable measures to mitigate damages]