(2017) should be append, since both the header and footer state that document is from 2017. — Also, from the parent page for that link: “ Unicode Technical N

(2017) should be append, since both the header and footer state that document is from 2017. — Also, from the parent page for that link: “ Unicode Technical Notes provide information on a variety of topics related to Unicode and internationalization technologies. These technical notes are independent publications, not approved by any of the Unicode Technical Committees, nor are they part of the Unicode Standard or any other Unicode specification. Publication does not imply endorsement by the Unicode Consortium in any way. These documents are not subject to the Unicode Patent Policy.” SOURCE: https://unicode.org/notes/ https://unicode.org/notes/