To define one character of the label as a mnemonic, so that the user can access this control by pressing the character on the keyboard, insert a tilde (~) character in front of the character in the label.
要将标签的一个字符定义为助记键，以便用户通过在键盘上按这个字符来访问对应的控制，请在标签中的该字符之前插入波浪号 (~) 字符。