buttons on top of page represent photo heights of: 40px 133px 500px 1000px and 1200px * There are 3 modes of display (
Z
) for a single photo: 1)normal, 2)background stretch, and 3)height or width stretch
Navigation - single photo
* Click mouse in left/right part of the screen * Use +/- 5 10 20 50 buttons to skip forward/backward * Use right/left keyboard arrow keys * Use keyboard keys eg
1.* Photos * 
