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How do I put terminals on my custom Vi

I've created a custom small vi (I guess considered as a sub vi) and attempted to bring it into my large vi application. I was able to bring it in to the larger application by going to the pallete and choose Open Vi menu and select the small vi from file tree.  When I placed this small vi onto my block doagram of the large vi, I noticed that I had no access to any output tunnels that exsisted on my small vi.  How do I define external inut and output terminals for my sub vi so I can use it in my App? 
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You have to connect your controls and indicators to the connector pane. Have you looked at the LabVIEW Help? This is explained in there. You may also want to learn more about LabVIEW by going through the tutorial(s) and looking over the material in the NI Developer Zone's Learning Center which provides links to other materials and other tutorials. You can also take the online courses for free.

 
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