In videotex,a display mode during which certain characters are displayed as spaces until the viewer chooses to reveal them. This facility can be used in games,quizzes,etc.

• 信息传视技术中的一种显示模式。在此模式下某些字符显示为空格，直到用户选择要显露它们时为止。这种功能可以用于游戏或猜谜等方面。