In this paragraph of the article, here is an example of different records to explain how to fill in DirName、Globals and RestAll, but i don't know what is DUA1:[TEST3] ? This doesn't look much like dirname, like this /cachesys/mgr/test/. Can someone explain it? I would greatly appreciate it !
InterSystems IRIS is a Complete Data Platform
InterSystems IRIS gives you everything you need to capture, share, understand, and act upon your organization’s most valuable asset – your data.
As a complete platform, InterSystems IRIS eliminates the need to integrate multiple development technologies. Applications require less code, fewer system resources, and less maintenance.

