For the 13th edition, the Committee of Experts determined that essential oils should be classified by function or purpose, in accordance with the Nice Classification General Remarks. Prior to the 13th edition, essential oils were classified in Class 3 regardless of their function or purpose. For example, essential oils for flavoring beverages were classified in Class 3 while flavorings for beverages, other than essential oils, were classified in Class 30. This amendment to the essential oils classification practice brings their classification into alignment with the General Remarks.