Hi, just for info....
About copyright without getting heavy on you.

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What you can do!

You are free to visit this creation using Rover to display the 3D environnement.
You are free to read the code and even check the 3d objects using the various tools to do so.
You are free to display the included (bset) images and textures using Rover.

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what you can not do!

Re-use or sell the 3d objects and images and textures. Should you require the re-use of these materiels please contact the City Hall of Calais, France at www.calais.fr

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Now that wasn't to hard :-) and doesn't retrict you using it.

Enjoy the visit

M@gician