/// `call` and `apply` are verbose ways to all a function.  `f.call`
/// is useful as a replacement for `f()` because it lets you set the
/// `this` that `f` sees.  `f.apply` is useful because it takes an
/// array of argument values, so that you don't need to write them
/// all out if you don't know how many there are.
function f() { logArguments(this, arguments); }// these are equivalent:
f(1, 2, 3);
f.call(window, 1, 2, 3);
f.apply(window, [1, 2, 3]);