4A ; 4B [Scope of Convention (issues covered): substantive validity of standard terms; Issues excluded: set-off];

8A ; 8B ; 8C [Interpretation of party's statement or other conduct: intent of party making statement or engaging in conduct; Interpretation based on objective standards ; Interpretation in light of surrounding circumstances];

18A1 ; 18A2 ; 18A3 [Criteria for acceptance of offer: statement of acceptance; Other conduct indicating assent; Silence or inactivity in and of itself insufficient];

19A ; 19B ; 19C ; 19D [Acceptance with modifications: reply purporting to accept but containing additions or modifications; "Acceptance" with immaterial modifications; Modifications that are material; Goods are accepted when "acceptance" differs materially from offer]