When you need the person in the photo looking in the other direction, or
you need the top of the image to be the bottom. Mirroring the image (sort
of). Right click on the image and follow the menus
→ → , or use the
button on the toolbox.
Using another APOD image [APOD07]
I demonstrated all of the flips on this image.
The tool used as is (the default) will simply flip the image at its
vertical axis. If you double click on the button, up will pop the
tool options diaolog window. Using this dialog or keeping pressed the
Ctrl key it is possible to choose horizontal flip
instead. All possible flips are displayed in this page.