### Keyboard controls

        Left / Reight   - Previos / next image
        Up / Down       - Image above / below
        Space           - Mark image (also shift-click)
        Ctrl-A          - Mark all images
        Ctrl-D          - Unmark all images
        Ctrl-I          - Reverse image marks
        Enter           - Toggle lightbox
        Esc             - Close image info or lightbox
        Delete          - Toggle image / marked for deletion (toggle)
        Shift-Delete    - Delete marked image(s) or current if none are marked

    NOTE: if the grid behaves in an odd way on resize tweak PATCH_MARGIN value,
    	though this sould not be necessary.
    	(optimal range >1 and <3)
    NOTE: the "basic actions" below are to be moved to the toolbar...

    For more info see: README.md

### Settings and debug controls

CAPTION
TAGS
METADATA