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LUNEX LITE

This is the simple basic LITE version for test/demo purposes.  It is identical
to the FULL version except that it only contains the basic maps and code to
render the raw, photo-realistic lunar images.

This allows potential users to see the basic operations of the program without
having to download the entire full package just to check it out.  The optional
texture maps make up the major bulk of the package and are excluded from this
version to make the package small (LITE).

Basically, all the program does is render user defined images of the moon and
the LITE version is simply provided without the extra maps and only contains
the basic lunar surface image and DEM maps for 3D lunar surface rendering.

Optional maps include such things as color-coded altimetry and gravity maps
and grids among others.  These are all included in the FULL package.

Users can also easily add their own custom texture maps to the system.

Simple PNG file format is recommended for textures because JPEG format strips
out some image data and sometimes distorts it. Even if this distortion is not
visible to the eye, it can make a big difference to the rendering engine and
possibly reduce the quality of the final rendered images.

Since we are dealing with the moon, we want the renderings to be as scientif-
ically accurate as possible.

