25. The method of claim 24 , wherein: (g) includes sending by the search engine to the client application instructions for displaying a visual indication that a first button from the first plurality of buttons has been selected; and (j) includes sending by the search engine to the client application instructions for displaying a visual indication that a second button from the first plurality of buttons has been selected.
26. The method of claim 25 , further comprising: (k) sending by the search engine to the client application instructions for displaying, concurrently with the visual indication that the second button has been selected, a visual indication that the first button was selected before the second button was selected.