The numbers against each category indicate how many objects are registered in that category, but an object can be in more than one category. When you select two categories containing the same object it will only be displayed once, possibly making it appear as though there is a discrepancy in the object count.
Only the most recent version of each object is ever displayed in this view. For older versions please use the main index (requires JavaScript to be enabled).
Hovering over a thumbnail or an icon brings up a description of the action that will be performed when you click it.
If you select a display mode and a scale for images and then save in your list of Bookmarks/Favorites these options are saved too, so that when you return to that Bookmark/Favorite it will display in your preferred layout.