a = true;
b = false;
c = undef;
d = a;
e = $fn;
f1 = [1,,];
f2 = [1,2,3];
g = f2.x + f2.y + f2.z;
h1 = [2:5];
h2 = [1:2:10];
i = h2.begin - h2.step - h2.end;
j = "test";
k = 1.23e-2;
l = a * b;
m = a / b;
n = a % b;
o = c < d;
p = c <= d;
q = c == d;
r = c != d;
s = c >= d;
t = c > d;
u = e && g;
v = e || g;
w = +i;
x = -i;
y = !i;
z = (j);
aa = k ? l : m;
bb = n[o];
cc = let(a=1) a;
dd = [for (a=[0,1]) let(b=a) if (true) b];