Elegant module styles

In the Elegant template there are 5 module styles....I haven't been able to figure out the styling that some of them take on. Would someone explain what styling element each one achieves.

- no (I understand this one)

- top (I understand this one)

- profile (I should understand this one, but I don't see any styling change when I use it)

- content (I should understand this one too, but I don't see any styling change when used), and

- sidebar (another on I should get, but don't).

Thanks,

Vineyardseashell