This panel contains 6 thumbnail picture ready for transmission (Top 6 boxes) and 18 autosaved images in thumbnail format. This panel can be resized to fit on your screen.
The first 6 images are loaded on startup (see Configuration window), and are never overwritten by the received images. The next 18 images (row 2-4) are thumbnails for the received images. When the 19th image is received, it will be stored on row 2 colom 1.....
You can transfer these images to the transmit window by left-clicking on them. To load new images, simply right-click in one of the thumbnails and you will be presented with a file selection menu.
Here is the logic behind image positioning.
It all depends on the original size of the image. If the original image is exactly equal to the canvas size, the selections horizontal, vertical and scaling have no influence (that's easy to understand).
If sizes are different: