Input mask
In computer programming, an input mask refers to a string expression, defined by a developer, that constrains user input. It can be said to be a template, or set format that entered data must conform to, ensuring data integrity by preventing transcription errors. The syntax of this string expression differs between implementations, but the fundamental input types are all supported.
Some frequent uses of input masks include entry of telephone numbers, ZIP or postal codes, times and dates.
Generally speaking, an input mask is a user-generated set of rules; e.g., a maximum of 45 characters. This kind of string is useful in finding reports and healthcare files.
