cumulative versus incremental export

I cannot make the difference between cumulative and incremental mode of exporting (FULL=Y), and when to use the one or/and the other. Can we say, that a complete export has the baseline level 0, cumulative the level 1, and that the incremental is of level 2 and it is a ministep of cumulative. Is that the main/only difference between them ?  thanks for every help. Received on Fri Nov 26 1999 - 15:25:35 CST