Leider konnte ich jetzt auf die schnelle nur was in Englisch finden und bin zu faul zum übersetzen:
"Jump Cancel
Certain basic moves can have their recovery time cancelled into a jump simply by pressing up as soon as the move connects. Whether you can perform a JC depends on the move, so experiment with each character. I have designated Jump Cancellable moves with a "J" in the movelist for each character. If the basic move floats, like Dizzy's f+H, then you can use the jump cancel to set the hapless opponent up for a float combo."