i discovered one way to do it without winwatch. since any window can be the target of a Delete, one can select Delete from the context of one window and use it on another window.

On Thu, Oct 17, 2013 at 12:57 PM, <a@9srv.net> wrote:

// how does one delete windows that have another window
// manager running inside (rio or nile)?

To delete a window with any graphical program, you'll need
external help. Under the hood, you write 'delete' to the target
window's wctl file. The winwatch fork mentioned makes this
easier.