Oh no DMA, it is all totally dynamic, you can add as much sections as you like. But I just use the 4 sections (Comments, Graphics, Sounds, Conclusion) cause those are the ones I always used (rememer these reviews come from my other site "The ST Graveyard"). I prefer sticking with these sections, as I think they sum up a product nicely. But if you feel like writing something and use less sections, or add more, that is of course also possible. The scores however, are fixxxed (but I could always alter this). I just don't know which other aspect of a game you can give a score to...
Hope this answers your question.