The hflip function is used to create a new images by flipping another image side for side horizontally. Its bounding box will be the same.
This gives images which are subtlely subjectively “wrong” for images which has shading to emphasize texture, because the aparrent light source also switches sides.
icomp 'hflip( dragon.png )' -o hflip-dragon.png ![]()
The single quotes are only needed on the command line (to insulate the parentheses from the shell) they must not appear in an icomp(1) script.