The macros to access ri output from within emacs load it into a new
buffer.  To get rid of it you have to press C-x 4 0 to close the
window *and* kill the buffer (otherwise it remains in the background
with some more 20 or 30 ri buffers...) and then confirm with yes.  Is
there any quicker way, such as with emacs help system where the window
that pops up is not selected and you just press C-x 1?

Massimiliano