диспетчер экрана с эмуляцией терминала VT100 / ANSI (screen manager with VT100/ANSI terminal emulation)
THE MESSAGE LINE
Screen displays informational messages and other diagnostics in a
message line. While this line is distributed to appear at the
bottom of the screen, it can be defined to appear at the top of
the screen during compilation. If your terminal has a status
line defined in its termcap, screen will use this for displaying
its messages, otherwise a line of the current screen will be
temporarily overwritten and output will be momentarily
interrupted. The message line is automatically removed after a
few seconds delay, but it can also be removed early (on terminals
without a status line) by beginning to type.
The message line facility can be used by an application running
in the current window by means of the ANSI Privacy message
control sequence. For instance, from within the shell, try
something like:
echo '<esc>^Hello world from window '$WINDOW'<esc>\\'
where '<esc>' is an escape, '^' is a literal up-arrow, and '\\'
turns into a single backslash.
