You can open a type definition by right-clicking a diagram terminal, constan, or front panel control, but it is not possible to get to a type def file just from a wire. There are a lot of times where I'm working on a diagram that uses a type definition that is only exposed as a wire. Right now, the process of getting to the type def is to create a temporary constant from the wire, then right click the constant. It would be nice to make it easier to get to the type def. And of course, I would like to have the same functionality for LabVIEW classes.