eM Client Main Window Changed Appearance

I did something to widen the margins of my eM client window and now it has a completely different appearance (list of folders, etc is still on the left, but the individual lines of emails in the Inbox is in a much smaller font and much wider, and whatever line item email is highlighted its content shows on the right side of the screen.  There is no longer boxes to the left of each email to X and delete, for instance.  Any way to return my window to its original default?

Fixed myself.  Please ignore.