How can I get a list of external relationships?

I have some project with external (inter project) relationships.  I can see the external relationships in the detail pane when selected on an activity, and I can see logic lines between the projects, but I can't find a way to list out all external relationships.

The schedule log gives a count of external ties, but not a listing.

Is there a built-in tool to access this?  If not, are their external tools which can report on the same?