Your change in the positioning of apps in Outlook has already generated so much negative comment that I haven't had time to read through and see whether my own comments have been covered. As most documents such as books, newspapers, letters, and even probably emails are printed in a vertical format,, your change makes no sense, and it reduces the space available to view things in that format. Because I regularly view documents such as books and archived documents which are almost exclusvely vertical, I work with a vertical screen, and the space for the app itself, and any document being viewed in it, are n quite unnecessarily narrow. As others have already commented, the position where the apps were before was in any case largely wasted space, I now have an even large blank area under my Outlook folders. Please give us the original option again, at least as an alternative.