Map Information ('i' icon) includes things such as title, a detailed description of the map, and under 'Advanced Options', the map's projection details. You can access the Map Information from two separate locations: the Map View, and Map List.
When viewing a map, simply tap the information icon ('i') located at the top right corner beside the search icon.
If you are at the Map List, do a long press on any map, and the information icon ('i') will appear at the top of the screen. Tap on the icon and the information will be displayed.