K XEARTH, MOTIF_TOYS, Displays a shaded image of the Earth in the root window   E     Xearth sets the X root window an image of the Earth, as seen from B     your favorite vantage point in space, correctly shaded for theA     current position of the Sun. By default, xearth forks a child E     process that runs in the background, updating the displayed image @     every five minutes to reflect changes in the Sun's position.E     Xearth can also render directly into PPM and GIF files instead of =     drawing in the root window. See the man page for details.     