This page exists because the
PageIndex page actually uses the {{Backlinks}} tag instead of the {{PageIndex}} tag.
Didn't realize {{PageIndex}} was working again, I've changed the PageIndex to use {{PageIndex}} again. We were using the {{Backlinks}} template because it was the only one that provided the same list and worked ({{PageIndex}} hadn't worked for over a year). You can delete this page then. --BW