As far as I know you need to use 'Ctrl-a n' to move the screen focus > into the next region of the split screen and then 'Ctrl-a c' to
start > a window in this split region with a shell in it. Otherwise it >
remains empty. > > You could also use 'Ctrl-a 0' to display the content
of the first > region of the screen in the second split region -
mirroring what the > first region shows. > > 'Ctrl-a tab' switches focus
between regions. 'Ctrl-a n' switches the > displayed window within a
region to the next window which has an > active shell in it, within the
screen session. Instead of 'n' for > next, or 'p' for previous, you can
enter the number of the window, > with 0 being the first window in the
screen session. > > I'm not sure if I explained it an understandable
way, but I think > with a bit of experimentation you'll soon understand
how screen > sessions, windows with shells and split regions work.
After rereading the info(gnu-screen) manual, which indeed clarifies that
'Ctrl-a S' will generate a blank window.
It works after following your advice, thanks
The gnu-screen runs a litte bit different from tmux which make me
confusing. Good thing is the structure
(sessions --->>> regions --->>> windows) becomes clear, thanks again
