Stephen Mercer and Allen Smith gave a presentation on the new Interfaces feature in LabVIEW 2020 today. If you missed it you can watch the recording at this link:
https://t.co/XUZKvffDUM?amp=1
The comments include links to some documents and a discussion forum to ask questions. This is worth checking out even if you are not familiar with what an interface is.
-John
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Certified LabVIEW Architect