2.1.571 Part 4 Section 2.18.38, ST_FtnPos (Footnote Positioning Location)
a. The standard defines docEnd as a supported value in the footnote position enumeration.
Word does not support docEnd as a value in the footnote position enumeration.
b. In the standard, sectEnd specifies that all footnotes shall be placed at the end of the section in which they are referenced.
Word treats sectEnd like beneathText and displays footnotes immediately after the last line of text on the page on which the note reference mark appears.