A masked field consists of an input mask and a literal mask. The input mask determines which user data can be entered. The literal mask determines the state of the masked field when the form is loaded.
掩码字段由输入掩码和字符掩码组成。输入掩码用于确定可以输入的用户数据。字符掩码用于确定掩码字段在加载窗体时的状态。