I haven't taken it (took the GREs, though). It looks like it's an adaptive test, which is kind of a pain in the ass. So it basically works like a binary search, where the questions get harder as you answer questions right or easier if you answer them incorrectly. This means that the earlier questions are disproportionately weighted, and you can't come back to check earlier questions. Make sure you're prepared for that kind of test.
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No I'm not a damn furry. Looney Tunes are different. - Guiga