Intro - rotating photos
Fav - favorite photos for 1) Landscapes and 2) Animals, People, Cities - photos cover the whole display area
All - all photos shown - photos cover the whole display area
      1) photos grouped Geographically
      2) Animals, People, Things
      3) Special Photos - Reflections, Sunsets, etc
      4) New Photos - 2017, 2016, etc
Layout - photos further grouped into smaller sections and labels, with width of only 4 photos
  - multi-page layout with page reloads

Search - search all photos
         example 1) red rocks       : show all photos with words "red" and "rocks" 
         example 2) cars 2002-      : show all photos with cars since year 2002
         example 3) hawks 2008-2010 : show all photos with hawks during years 2008-2010
Random - 20, 50, 200 or 1000 random images

Keyboard Controls and Buttons
 Left / Right  - navigate humbnails
 Enter / Space - load big image (slideshow)
 H or    - help (this screen)
          - hide/show menu area
 

 B            - hide/show all controls - for having a Blank screen on Slideshow screen

Slideshow controls are shown/hidden with 
When hidden,   can be used to navigate.
Background Music can be controlled as well.

Slideshow has 3 draggable sliders for 1) Current Image, 2) Delay between images, and 3) Step or number of images to skip

Keyboard Controls and Buttons
 Left / Right  - next/previous images
 Enter / Space - exit to Thumbnails view
 ESC          - exit to Thumbnails view
 H or     - help (this screen)
            - hide/show slideshow menu
 B            - hide/show all controls - for having a Blank screen
           - show/hide 1) Photo Description + Location + Keywords + filename
       
   - show/hide 2) Camera/Lens EXIF, flash, color temperature ...
 I            - hide/show Photo Description + Location + Keywords
 K            - Keywords
 Z            - show/hide Camera/Lens EXIF photo info