* How can I blank the tmux window?
GNU screen has a feature whereby it will blank the screen after a period of
inactivity. To do the same thing in tmux, use the lock-command setting, for
example (with GNU bash):
set -g lock-command 'tput civis && read -s -n1'
This will remove the cursor and tell the shell to quit once a key has been
pressed. For zsh, use "read -s -k1".
In addition, it's possible to have both blanking and locking (for instance via
lock(1) or vlock(1)) by using the following:
bind x set lock-command '/usr/bin/vlock' \; lock-client \; set lock-command 'tput civis && read -s -n1'