To mark a crop rectangle, if one is not already marked, press and hold the (left) mouse button down, and drag the mouse. If an area is already marked, you may press Clear to reset it, and then mark a new rectangle.
When an area is marked, you may adjust the area, by dragging any part of its frame, or move it by dragging inside the area.
Clear - Reset crop rectangle to whole picture.
Revert - Revert crop rectangle to original setting.
Save - Retrieve a full-resolution version of the picture, with the specified
crop-rectangle and parameters (not operational here, requires FotoWare's FotoWeb).
CCR - Counter-clockwise rotation (this is planned to be replaced
with an icon, instead of "CCR")
CR - Clockwise rotation (ditto)
Status line: Quality - actual resolution/target resolution. This is also reflected in the coloured bar:
Green - Q >= 2.0
Yellow - 1.0 >= Q > 2.0
Red - Q < 1