I was a bit confused for a time because, after creating a new device definition, double clicking on it would bring up the properties window. Right clicking on it and selecting “Enter Browser” allows you to browse the contents, and once you put something inside, going back to the device definition and double clicking opens it as normal. I thought I might bring this up just in case the behavior for an empty device definition is supposed to be the same as one that has contents.
Regards
Brian