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I've been away from the LAVA forums for a couple years. Recently, due to some site maintenance. I decided to hang out and check out some of the cool discussions here on LAVA... I'm still trying to find them. So is LabVIEW just fading in popularity? Being relegated to some obscure language nobody cares about? Or have the cool kids gone somewhere else? Where do you go to discuss exciting LabVIEW topics, or even boring ones? I really want to know because I want to hang out there too! LAVA served a purpose to connect people in an independent forum where none existed before. Does LAVA still need to exist in this age of hundreds of ni.com communitiues? Has LAVA's glory passed? Or is it simply that we need some restructuring to get interest back again? Honest feedback welcome.

I really don't know the details. A VI reference is simply a somewhat complex index into a list of VI data structures. This VI data structure is a huge C struct that contains all kinds of data elements including pointers to pointers to pointers to pointers of various data. Some of this is the diagram heap, the front panel heap, the data space heap, and the compiled code heap. And this structure changes with every LabVIEW version significantly since there is no external code ever directly accessing it. Interfacing anything in this structure directly is a complete nogo as it will be totally incompatible with every new LabVIEW version, even service releases and potentially bug fix releases. And the actual machine code is not just a function pointer segment that you can jump too with the parameters on the stack, instead the code directly refers to it's parameters through VI internal structures from the conpane and all. Setting that up correctly on your own is definitely a way into total crazyness.

Not sure if this helps, but hooovahh secretly explained the XNode editor on YouTube (I recommend watching the entire video btw ): It is closely followed by a quick introduction to the Variant Repository https://www.youtube.com/watch?v=R2En7yMANi8&feature=youtu.be&t=34m44s Wow, new Lava embeds videos now