Interpretative Rule amendment: exclude assembly-method complexities when applying tariff classification under the Harmonised System update. Amendment to the explanatory note of Interpretative Rule 2(a): deletion of the word 'simple' and addition of a paragraph specifying that complexities of the assembly method are not to be taken into account when applying the rule for tariff classification. The Harmonised System Committee's classification decisions and opinions are enclosed and directed for circulation to assessing officers for use in customs classification.