# Referendums (Scotland) Act 2020, Paragraph 24


(1) The envelope which the counting officer is required by rule 8(1) of the conduct rules to issue to a postal voter is to be marked with the letter “B”.
(2) The counting officer must also issue to a postal voter a smaller envelope which is to be marked with—
(a) the letter “A”,
(b) the words “ballot paper envelope”, and
(c) the number of the ballot paper.

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Source: https://www.legislation.gov.uk/asp/2020/2/schedule/1/paragraph/24 (the official version)
Page: https://openlegislation.uk/referendums-scotland-act-2020/schedule-1/paragraph-24
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.