You have removed the ability to cancel after I try to close the document -- the 'Save Changes' dialog only has 'Save' or 'Discard'. It is SO CRITICAL to be able to cancel, in order to save the changes to another file -- I use redmarks on PDFS all the time and frequently close the file accidentally, only to realize that i need to save the redmarks to ANOTHER FILE NAME, not OVERWRITE the current one. Please bring back the 'cancel' button and also the use of the Escape key to cancel it.