By clicking on a Folder Difference item a File Compare window is open. This File Compare is easily closed, and if closure was a user accident it just needs another click on the Folder Difference item to again File Compare.
Accidental closure of Folder Compare is an absolute disaster. After waiting half an hour whilst C:\ is compared with the backup partition image taken last week, I then trawl through several hundred items, hiding most, but many remain for scrutiny to decide if I want to preserve in this week's backup image, or whether to first delete. Scrutiny involves File Compare, and closing the File Comparison by clicking top right corner is an immediate wipe-out - it would be so nice if the "active" window had the top right corner, and did not have its close button buried inside the outer window frame and "greyed out" (present and usable, but not very noticeable). After a wipe-out I then have another half hour wait and then do it all over again.
I have now trained myself to use ESC to close the File Compare Window, BUT sometimes I have an accident and ESC closes the Folder Comparison and I have to start all over again.
It would be very nice if ESC, or Ctrl-W, or ANY hot key combination could be used to Close a File Compare window, but to have no effect on the Folder Compare Window.