window is created when you requested the building of a thumbnail sequence from
the Image Viewer Window.
Depending on the number of images to be included in the sequence, this may be
divided in several thumbnail windows, each corresponding to a thumbnail file.
clicking on a thumbnail name, you are prompted for a possible rename of that
currently selected thumbnail can be recognized by the blue color of the file
double clicking a thumbnail image, the normal size image will be shown in an Image (Non Full Screen, Framed) Window.
images already seen in normal size can be recognized by the red color of the
See Thumbnail Context Menu
for the functions available in this window.