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Why some function nodes are gray-ish in color in block diagram?

Ajay_MV

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‎08-11-2017 12:34 AM

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LabVIEW

In LabVIEW 2016 I see that few function nodes are gray tint colored but in the function pallet I see them dark colored. Why does this happen? For example, in below image see that TDMS write from the function palette is dark color where in block diagram it's grayed.