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

26A1 [Effective declaration of avoidance: notice to the other party required];

63A [Notice fixing additional final period for performance: additional final period for buyer's performance];

64A [Grounds for avoidance];

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

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

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

78A [Interest on delay in receiving price or any other sum in arrears]