Heh, it was probably me or @half-ogre  that started explicitly writing the AAA comments but I don't do it anymore per @half-ogre's influence. Nowadays I just make sure tests have an empty line to delimit the section.

```
public void SomeTest()
{
    line of code starting the implicit arrange part
    another line of arrange code

    act code. Ideally one line. Sometimes has t obe more.

    assert line of code.
    another assert line of code. I believe in a single "logical" assert per test, but that can be multiple actual assert calls.
}

```

I think which sections are each can be implicitly determined if you follow that style, which is what I think Tim is saying. However, the one benefit of the comments is for n00bs who might never even heard of the AAA style. It forces them to notice it. So it's a tossup as far as I'm concerned is what I'm trying to say. :)