If you type information into a computer or type it in, you press keys on the keyboard so that the computer stores or processes the information. Officials type each passport number into a computer You have to type in commands, such as `help' and `print' You type things in, and it responds. = key in
A program listing, published in a magazine, etc., to be typed and run by the reader
The quality of the type-ins were sic] a cut above the ones found in rival magazines.