A mnemonic is the underlined character in the caption on a button, check box, menu, or other control label. The user can press this underlined character and the Alt key at the same time to go directly to that control or to trigger the clicked event on the control. You specify a mnemonic by placing an ampersand (&) in front of the character to be used as the mnemonic when you type the Caption value. It is important to make certain that you do not use the same mnemonic more than once on the same window, or set of menus, because the user can get confused when choosing a mnemonic doesn’t result in the
action that he or she expects.