Microsoft updated all of its office apps for Windows 10 Mobile users with few different features. All app gets a feature called smart lookup. Smart Lookup helps you to get useful information, images and definitions. To use Smart Lookup you just need to select a Phrase or Word and long press it choose Smart Lookup.
Though apart from Smart Lookup, this allow Excel users to open comma separated value text files, also PowerPoint now has the ability to use Superscript and subscript text format.
make sure you’re checking for update to download the latest versions.