affix Element ¶affix :definesReference=int :position=(subscript | superscript) :suffix=bool :value => EMPTY
This defines a suffix (or, theoretically, a prefix) for a formatted value. It is used to insert a reference to a footnote. It has the following attributes:
This specifies the footnote number as a natural number: 1 for the first footnote, 2 for the second, and so on.
Position for the footnote label.  Always superscript.
Whether the affix is a suffix (true) or a prefix
(false).  Always true.
The text of the suffix or prefix.  Typically a letter, e.g. a
for footnote 1, b for footnote 2, ...  The corpus
contains other values: *, **, and a few that begin with
at least one comma: ,b, ,c, ,,b, and ,,c.