G

G is the "native" language of LabVIEW. Some arguments might be made as to whether LabVIEW code should instead be called G source code. Let it therefore be said that strictly speaking LabVIEW is the development environment, while G is the code produced under the LabVIEW system. Let it also be added that the graphical language G cannot be re-interpreted into a text based language. You cannot pop the hood on LabVIEW generated code and see the underlying text code, because there is none! Thus G remains the underlying source code that LabVIEW developers work with.