Allow the user to clear all unpinned documents from the start-up window
This applies to all the programs in Office 2016 for Mac. Unlike the previous versions from 2011, in the newer and "improved" applications it is no longer possible to clean unpinned documents from the list that shows when Excel/Word/PowerPoint is launched. It's also impossible to clear the recent documents that show under File > Open Recent. This clearly reflects Microsoft's new and disrespectful stance on the privacy of their customers.