How to close window at byobu?

I started to use byobu, and find the it really cool thing.

It has a lot of hot keys. But I couldn't find one of them, and I stuck with one tricky point.

With F2 - you create a new window, but how to close this window when you don't need it anymore?

Later I found cool analogy for new window creation - just divide window and - shift-F2

And you can revert it back - ctrl-F6.

You can either type exit, or use Byobu's keybinding for killing windows/panes, which is Ctrl-F6.

Full disclosure: I am the author and maintainer of Byobu.

ctrl + a, then k

If it asks for confirmation, type y and hit enter.

If there are no more jobs running in the window, then you can use Ctrl+D to close it.