17.4a Section numbers and reference citations.

Follow print spacing and capitalization when brailling section numbers and reference citations. Print dots used as separators in such citations should be represented by the braille decimal point only when they occur between arabic numbers. When a dot occurs between roman numerals and arabic numbers or between numbers and letters it should be represented by the braille period. Examples:

6.4.5 II.7

A letter sign is needed in a citation only when a letter immediately follows a number, or a number and a comma, colon, or hyphen (see 3.1a). [II.12.a(1) and VII.28.a] Examples:

13.2b 2:B
6-a, 6-c 9.1.a.