Gayle,
This is the initial written brief wherein the WTS states its reason(s) for making the appeal. Usually this involves a procedural error made by the lower court that could have the force and effect of having the case overturned. There are other less-dire results that can come from this if WTS prevails. On the other hand, if WTS loses its appeal, these extensions can work against it vis a vis interest accruing on the judgment. If they lose the appeal, a further appeal can be made to the California State Supreme Court. If they lose there the only thing left is the U.S. Supreme Court. Unless WTS can come up with some constitutional issues in this case, it's highly doubtful the U.S. Supreme Court would hear it.