Any character in a label string that is preceded by an ampersand (&) becomes the mnemonic. The character doesn't have to be unique to the dialog box. If more than one tile has the same mnemonic, the user presses that key to cycle through the tiles sequentially.
Mnemonics change focus but do not select a tile. If the user specifies a mnemonic key for a tile that contains a group of items, such as a cluster or a list box, the focus is put on the first item in the tile that is a tab stop
置顶卡
