So during yesterday's lecture, Chris briefly showed XPath builder in OxygenXML, and I remember there were these... arrows or brackets or something (?) underneath the first XPath that allowed him to further refine the search separately as different steps.

I've tried googling XPath builder in OxygenXML but any explanations for its usage just seem like it's a separate but larger XPath window.

Can you explain how you used XPath builder in the Zoom presentation yesterday?