terminal multiplexer with VT100/ANSI terminal emulation GNU Screen is a terminal multiplexer that runs several separate "screens" on a single physical character-based terminal. Each virtual terminal emulates a DEC VT100 plus several ANSI X3.64 and ISO 2022 functions. Screen sessions can be detached and resumed later on a different terminal. . Screen also supports a whole slew of other features, including configurable input and output translation, serial port support, configurable logging, and multi-user support. Manual and Help Documents