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I believe it is, at least for desktop platforms. Given the pointer that ArrayMemInfo outputs, I can subtract 4 bytes (for 1D array of U32) or 8 bytes (for 2D array of U32) from it and do DSRecoverHandle, that gives a valid handle. I can even get its size with DSGetHandleSize and it will correspond to the array size that was passed to the ArrayMemInfo (plus N I32-sized fields, where N is the number of the array dimensions). According to the doc's such as Using External Code in LabVIEW handles are relocatable and contiguous. Of course, Rolf could add more here. @Neil Pate If you wonder what that wrapper trick is, check this post. Using those tokens you could somewhat enhance your CLF Nodes and reduce time spent on each call.