The commonplace alternation between the 2 most recent tasks (using a fast with all keys released immediately) is precisely a special case of the above behavior. Suppose the windows are "A B C" and we want to alternate between "A" and "B". Hold Alt while pressing and releasing Tab; continue holding Alt. The list will show "A B C" and the cursor will initially be over "B". When Alt is released "B" will be selected, Tab having been pressed a total of 1 time, and zero attention to the task selection cursor having been necessary. Again, press and release Tab while holding Alt. The list will show "B A C" and the cursor will initially be over "A". When Alt is released we have switched back to "A". Displaying the list again, the order has returned to "A B C" and this sequence can recur. On close inspection, in the course of typing and releasing both keys quickly, the task list window can be observed to flicker for a split second, so .