It displays the results from the first engine that you selected, in the bottom frame. To switch to another engine, select its name from the drop-down list that appears in the frame on top-left.
Then, if you again perform a search, this time selecting Yahoo and Excite, the results for Yahoo will be shown in its original window (i.e. its window will be reused); the Altavista window will remain unchanged; and a new window will be opened for Excite.But if you had left the reuse windows checkbox unchecked in the above example, the search results for the second search at Yahoo would also be shown in a new window (i.e. its window would not be reused). Thus, a new window will be opened every time you search.
You can select to show or hide the various components in the search results windows:
Select the Disable metasearch checkbox to disable the "Metasearch using..." checkboxes at the bottom of several categories. This will prevent them from being selected when you press the "All" button. The metasearch engines will also not be listed in the engines drop-down list in the search results window.