Photos "Start Tile shows ..."

[barber76]

Lumia 640 running WP 8.1 Update 2.
Currently "Photos" tile on the dektop shows only one photo. If I go to photos-> settings, the very first menu option is called "Start Tile shows" with current value set to "favorite photos". But what is favorite photos? There is nothing special about the current photo which is shown on start tile, I didn't marked it as favorite or smth.

 

[garryknight]

Go into the photo app and tap the select icon. Now tap each photo you want to favourite. Now click the heart icon at bottom right and those photos will be favourited. You can unfavourite photos the same way.

 

[barber76]

Go into the photo app and tap the select icon. Now tap each photo you want to favourite. Now click the heart icon at bottom right and those photos will be favourited. You can unfavourite photos the same way.

Thanks! Somehow I (accidentally) favorited single photo.