Selection.PreviousBookmarkID Property (Word)
Returns the number of the last bookmark that starts before or at the same place as the specified selection or range; returns 0 (zero) if there is no corresponding bookmark. Read-only Long.
Syntax
expression .PreviousBookmarkID
expression A variable that represents a Selection object.
Example
This example selects the previous bookmark in the active document.
num = Selection.PreviousBookmarkID
If num <> 0 Then ActiveDocument.Content.Bookmarks(num).Select