The banner on top of that Unisys page is a gif image.  If Unisys has not
licensed itself, it will have to sue itself!  ;)
Brendan Ryan

Nathan Kopp wrote:

> MegaPov 0.5a is now available for Windows and Mac (other versions will
> follow from other developers).
>
> PLEASE NOTE: GIF support has been removed due to the Unisys patent on LZW
> decompression.  Please view the link at the end of this message if you want
> to read what Unisys has to say about licensing.
>
> The Windows version can be downloaded from:
> http://nathan.kopp.com/patched.htm
>
> The Macintosh version can be downloaded from:
> http://users.skynet.be/smellenbergh
>
> -Nathan
>
> === summary of changes ===
> * removed GIF support (potential legal issues regarding the Unisys patent)
> * fixed docs for pigment_pattern
> * fixed disc problems (removed fastdiscpatch)
> * fixed long filename support in the Windows version
> * fixed interface-related bugs (Windows version moved to 3.1g interface)
> * fixed bug with photons on average texture
> * fixed bug with media method 3 when samples = 1
> * fixed bug with parsing backwards compatibility and unofficial version
> number
> * added fastspherepatch
> * added fastpolypatch
> * fixed "bug" with mesh (MegaPov did not ignore degenerate triangles if uv
> mapping was used in the triangle)
> * fixed bug with ttf
> * fixed bug with csqr
>
> Here is the reason why GIF support has been removed:
> http://www.unisys.com/unisys/lzw/default.asp

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