Here we see the main pane of the interface.
To the left is the self-generated list of categories under which the cards are filed. There is also a search facility (filter) for finding cards based on a word search.
In the top main frame is the list of cards in the selected category, with the high-lighted card open.
The details of the open card are shown in the bottom of the main frame, where a thumbnail of the front or back image can be selected. These thumbnails are clickable, opening full-sized pop-up images.