The \textreferenceposition command is always used in conjunction with the
\endnoteformat (\enf) command, and will determine whether the endnote reference
number within the text is a superscript number or not. The format for the
\textreferenceposition command is:
\endnoteformat{
\textreferenceposition{xx}
}
Where "xx" is either "up" or "down". \textreferenceposition{up} will give
superscript numbers for the endnote reference numbers within the text.
\textreferenceposition{down} will give print the endnote reference numbers
within the text on the baseline.