Switch to Draft view and then double click on an Endnote reference number in
the body of the document and the footnote/endnote pane will be displayed.
From the pulldown in the top border of the pane, you can then select the
separator(s) and modify them.
You can also add the View Endnote Separator to the Quick Access Toolbar from
the Commands not in Ribbon group.
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Hope this helps.
Please reply to the newsgroup unless you wish to avail yourself of my
services on a paid consulting basis.
Doug Robbins - Word MVP