OTOH, because of the same rule, the following abomination is legal in C++, but its analogous in Nim would trigger a compilation error: int main() {

OTOH, because of the same rule, the following abomination is legal in C++, but its analogous in Nim would trigger a compilation error: int main() { int myVar = 1; int my_var = 2; int mYVAR = 3; int myVAR = 4; // ... } I have seen a few codes in my life where complex routines with multiple nest levels had variables with names "x", "X", "_x", etc.