Description:

Twin is a windowing environment with mouse support, window manager,
terminal emulator and networked clients, all inside a text display.

It supports a variety of displays:
- plain text terminals (any termcap/ncurses compatible terminal, Linux
console, twin's own terminal emulator);
- X11, where it can be used as a multi-window xterm;
- itself (you can display a twin on another twin);
- twdisplay, a general network-transparent display client, used to
attach/detach more displays on-the-fly.