License:The snow source code and the algorithms contained within it are freefor non-commercial use. Licences for commercial single-customerapplications will usually be granted free of charge, but contact theauthor for confirmation. Notes: (*)As of 29 May 1999 the source code has changed from being publicdomain to being free for non-commercial use. However, commercial users are automatically granted a licence for any use of the snow code andalgorithms deployed before this date.
Is it possible to take something that had been put in the public domain (ie copyright-less) and put a copyright and a license on it controling its use ?
JC Helary