As of now, function calls are handled by treating the label as the join of arguments.
This should still be true for library functions.
However, for declared functions it should be the label of the returned value.
Remember declared function names
Handle function calls
If declared function, label is that of the return value
If library function, label is the join of actual parameters
As of now, function calls are handled by treating the label as the join of arguments. This should still be true for library functions. However, for declared functions it should be the label of the returned value.