(walk-windows): Doc fix.

1 files changed, 6 insertions, 2 deletions

diff --git a/lisp/subr.el b/lisp/subr.el
index b46f95cc9a6..f611d007621 100644
--- a/lisp/subr.el
+++ b/lisp/subr.el
@@ -36,8 +36,12 @@ PROC is called with a window as argument.
 Optional second arg MINIBUF t means count the minibuffer window
 even if not active.  If MINIBUF is neither t nor nil it means
 not to count the minibuffer even if it is active.
-Optional third arg ALL-FRAMES t means include all windows in all frames;
-otherwise cycle within the selected frame."
+
+Optional third arg ALL-FRAMES, if t, means include all frames.
+ALL-FRAMES nil or omitted means cycle within the selected frame,
+but include the minibuffer window (if MINIBUF says so) that that
+frame uses, even if it is on another frame.
+If ALL-FRAMES is neither nil nor t, stick strictly to the selected frame."
   (let* ((walk-windows-start (selected-window))
          (walk-windows-current walk-windows-start))
     (while (progn