Author here. I was mostly thinking of National Instruments' LabVIEW and disassembly programs like IDA and Ghidra. Those in particular have actual callgraphs, al

Author here. I was mostly thinking of National Instruments' LabVIEW and disassembly programs like IDA and Ghidra. Those in particular have actual callgraphs, although LabVIEW is a graphical language anyways so of course it would. You might also see dependency graphs in OOP IDEs, for seeing what inherits what. I didn't bother to put this detail in the article because this little tangent distracts from the point a bit.