// The displayTopBottomResult method closes the CursorManager for the
// Cursor created in t3.
// Undo t3, which discards the state of topNBottom that was set in t4.
tp.rollbackCurrentTransaction(); // t3 disappears
// Transaction t1 is now the current Transaction and the state of
// topNBottom is the one defined in t2.
// To show the current state of the TopNBottom template Source,