title: What is a map tile?
body: <p>I read the google android api and was confused about what a map tile is as the api described how google map handles "downloading map tiles". 
  (Src)-<a href="https://developers.google.com/maps/documentation/android/map" rel="noreferrer">https://developers.google.com/maps/documentation/android/map</a>. Can someone give a quick overview of what a map tile is. Just a section of the map that fits a device screen?</p>