Image is shown in picture pane at the right in default setting.
You can change the size of the pane by dragging the border line between
folder tree, album list and thumbnail list.
Click the image in the picture pane to show it in 100%.
: Histgram, right click menu is available.
Cllip Highlight and Shadow.
(Click'n Viwe Pro Only)
Shows RAW image date directly or use the embedded jpeg image in RAW file.
Right click menu change the brightness and quality of the RAW image.
Click at the left bottom of the window, the picture pane changes its position
periodicaly.
Right click menu of is also available to change the position directly.
...
Click at the left bottom, Click'n view turns into picture mode. Click to go back.
: Histgram, right click menu is available.
Cllip Highlight and Shadow.
(Click'n Viwe Pro Only)
at the left bottom of the window, the picture pane changes its position
periodicaly. 
at the left bottom, Click'n view turns into picture mode. Click
or F3 key toggle fullscreen view and normal view.