Hello
Is there a hotkey to open/close all folders?
BACKGROUND
I ask because there is an annoying feature which is this:
If I have already allocated an Area to a task, it is very easy to lose that Area when you I move a task up or down the master “Projects & Actions” sort order.
Specifically what happens is if you move a task (e.g. using Control+Shift+Down) into a folder that is already open, then the task acquires the Area of that task and the Area that I had previously added is lost. And if you then keep moving the task down into the root directory, it will now think that its Area is the area that it passed through as I kept hitting Control+Shift+Down!
With thanks
J
EDIT: OK, since writing this post, I have now just found the “Expand All” and “Collapse All” buttons! 
Suggestions:
A) It would still be nice to have those functions on a Hotkey
==> This would be faster (because the user’s hand would not need to leave the keyboard).
B) Why not have a single button that toggles between doing expand and collapse?
==> This would save on precious screenspace
==> This would allow the user to open and close all folders without moving the mouse