C-a kC-a C-kkillKill current window.
If there is an exec command running then it is killed.
Otherwise the process (shell) running in the window receives a HANGUP
condition, the window structure is removed and screen (your display)
switches to another window. When the last window is destroyed, screen
exits. After a kill, screen switches to the previously displayed
window.
Note: emacs users should keep this command in mind, when killing a
line. It is recommended not to use C-a as the screen escape key or to
rebind kill to C-a K.
None yet.