Line editor

In computing, a line editor is a text editor in which each editing command applies to one or more complete lines of text designated by the user. Line editors predate screen-based text editors and originated in an era when a computer operator typically interacted with a teleprinter, with no video display, and no ability to move a cursor interactively within a document. Line editors were also a feature of many home computers, avoiding the need for a more memory-intensive full-screen editor.

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