The arrow keys, page-up/down, j, k and Space can be used to move the focus. Escape cancels prompts and Enter selects. Hit : at any time and type in commands to the prompt.

The interface shows one buffer at a time, you can use Tab and Shift-Tab to switch between them, close the current buffer with d and list them all with ;.

The buffer type or mode (displayed at the bottom left) determines which prompt commands are available. Usage information on any command can be listed by typing help YOURCOMMAND to the prompt. The keybindings for the current mode are listed upon pressing ?.