Ctrl-b : Send the prefix key through to the application.
" : Split the current pane into two, top and bottom.
% : Split the current pane into two, left and right.
x : Kill the current pane.
q : Briefly display pane indexes.
c : Create a new window.
p : Change to the previous window.
n : Change to the next window.
& : Kill the current window.
d : Detach the current client.