Try it!

In oXygen open the file (To open a URL use File > Open URL… or ⌘-u (Mac) or ctl-u (Windows).)

In the upper L corner there is a text-entry field (looks like a search box). Ensure the box is labelled XPath 2.0 Then type in /TEI/teiHeader/fileDesc/titleStmt/author Notice that you have content completion, so it is very easy to type. (If you don’t, set it in Options / Preferences ; Editor / Content Completion / XPath)

An image of an oXygen window

Here is what the oXygen XPath console will look like.

Navigating the XML Tree, slide 12 of 18