fn-type Type of Footnote
Type of information conveyed in the footnote (for example, financial disclosure).
There are many reasons why the text or metadata of a standard might be footnoted. Where those reasons are known, this attribute can preserve that information. This could be a means of preserving, for example, that a member of the original Working Group or Committee is now deceased.
Since the use of @fn-type in standards documents is currently uncommon, there is no list of suggested values, and standards organizations are free to use any value for this attribute.
OPTIONAL on element: <fn>
|Letter, numbers, of special characters||The reason for the footnote or type of footnote, such as “Conflict of interest”, “deceased”, or “financial-disclosure”.|
|Restriction||This is an optional attribute; there is no default.|