Line mode

An output mode of a 4GL program which produces a scrolling, character-based display interface. Screen addressing is not used. 4GL enters this mode and displays the Line-mode overlay when it executes a simple DISPLAY statement (one without an AT, BY NAME, or TO clause).4GL remains in Line mode as long as it encounters additional simple DISPLAY statements or the PROMPT statement. When it encounters any other output statement (ERROR, DISPLAY AT, and so on) or a user interaction statement, 4GL returns to Formatted mode. Because this mode results in a simple stream of characters to standard output, it should not be mixed with Formatted mode.

See also Formatted mode, Line-mode overlay.