tango.icn file copyright information

The uwe subdirectory contains icons released under the BSD license (http://creativecommons.org/licenses/BSD/) by Unknown Worlds Entertainment at http://www.unknownworlds.com/developer/.  These icons have been slightly modified
from their original form by Morgan McGuire.

All other icons are from the Tango Image Library http://tango.freedesktop.org/ and are in the public domain.
