LICENSE

USGS Software User Rights Notice

Software and related material (data and [or] documentation), contained
in or furnished in connection with a software distribution, are made
available by the U.S. Geological Survey (USGS) to be used in the
public interest and in the advancement of science. You may, without
any fee or cost, use, copy, modify, or distribute this software, and
any derivative works thereof, and its supporting documentation,
subject to the following restrictions and understandings.

If you distribute copies or modifications of the software and related
material, make sure the recipients receive a copy of this notice and
receive or can get a copy of the original distribution. If the
software and (or) related material are modified and distributed, it
must be made clear that the recipients do not have the original and
they must be informed of the extent of the modifications. For example,
modified files must include a prominent notice stating the
modifications made, the author of the modifications, and the date the
modifications were made. This restriction is necessary to guard
against problems introduced in the software by others, reflecting
negatively on the reputation of the USGS.

The software is public property and you therefore have the right to
the source code, if desired.

You may charge fees for distribution, warranties, and services
provided in connection with the software or derivative works
thereof. The name USGS can be used in any advertising or publicity to
endorse or promote any products or commercial entity using this
software if specific written permission is obtained from the USGS.

The user agrees to appropriately acknowledge the authors and the USGS
in publications that result from the use of this software or in
products that include this software in whole or in part.

Because the software and related material are free (other than nominal
materials and handling fees) and provided "as is," the authors, the
USGS, and the United States Government have made no warranty, express
or implied, as to accuracy or completeness and are not obligated to
provide the user with any support, consulting, training or assistance
of any kind with regard to the use, operation, and performance of this
software nor to provide the user with any updates, revisions, new
versions or "bug fixes".

The user assumes all risk for any damages whatsoever resulting from
loss of use, data, or profits arising in connection with the access,
use, quality, or performance of this software.