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Reference.org
Button (computing)
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<p>In <a href="/facts/Computing/Kghtm9fX">computing</a>, a button (sometimes known as a command button or push button) is a <a href="/facts/Graphical_control_element_(software)/SuVeScB2">graphical control element</a> that provides the user a simple way to trigger an <a href="/facts/Event_(computing)/0YdM6AoB">event</a>, like searching for a query at a <a href="/facts/Search_engine/SRntsbz2">search engine</a>, or to interact with <a href="/facts/Dialog_box/VgWHgrE2">dialog boxes</a>, like confirming an action. </p>