the comments in the files say it's his work:
Copyright (c) 2001,2002 Thomas Grill (xovo@gmx.net) For information on usage and redistribution, and for a DISCLAIMER OF ALL WARRANTIES, see the file, "license.txt," in this distribution.
On Tue, 12 Feb 2002 15:15:33 -0800, Mark Danks wrote:
Actually, it isn't his call :-) GEM has the gpl...
BTW, I think that the layer is _very_ cool!