8C [Interpretation of party's statement or other conduct: interpretation in light of surrounding circumstances];

9C [Practices established by the parties];

11A [Formal requirements: writing or other formality for conclusion of contract not required];

14A [Criteria for an order (basic criterion): intention to be bound in case of acceptance];

18A [Acceptance of offer (time and manner): criteria for acceptance];

19C ["Acceptance" with modifications: modifications that are material];

23A [Time of conclusion of contract: contract concluded when acceptance becomes effective];

29A [Modification or termination of contract by agreement]