Appendix D Open Software Announcements

NWA3000-N Series User’s Guide

353

Finally, any free program is threatened constantly by software patents. We wish to avoid the danger 
that redistributors of a free program will individually obtain patent licenses, in effect making the 
program proprietary. To prevent this, we have made it clear that any patent must be licensed for 
everyone's free use or not licensed at all.

The precise terms and conditions for copying, distribution and modification follow. 

TERMS AND CONDITIONS FOR COPYING, DISTRIBUTION AND MODIFICATION

0. This License applies to any program or other work which contains a notice placed by the copyright 
holder saying it may be distributed under the terms of this General Public License. The "Program", 
below, refers to any such program or work, and a "work based on the Program" means either the 
Program or any derivative work under copyright law: that is to say, a work containing the Program or a 
portion of it, either verbatim or with modifications and/or translated into another language. 
(Hereinafter, translation is included without limitation in the term "modification".) Each licensee is 
addressed as "you". Activities other than copying, distribution and modification are not covered by this 
License; they are outside its scope. The act of running the Program is not restricted, and the output 
from the Program is covered only if its contents constitute a work based on the Program (independent 
of having been made by running the Program). Whether that is true depends on what the Program 
does. 

1. You may copy and distribute verbatim copies of the Program's source code as you receive it, in any 
medium, provided that you conspicuously and appropriately publish on each copy an appropriate 
copyright notice and disclaimer of warranty; keep intact all the notices that refer to this License and to 
the absence of any warranty; and give any other recipients of the Program a copy of this License along 
with the Program. You may charge a fee for the physical act of transferring a copy, and you may at 
your option offer warranty protection in exchange for a fee.

2. You may modify your copy or copies of the Program or any portion of it, thus forming a work based 
on the Program, and copy and distribute such modifications or work under the terms of Section 1 
above, provided that you also meet all of these conditions: 

a) You must cause the modified files to carry prominent notices stating that you changed the files and 
the date of any change.

b) You must cause any work that you distribute or publish, that in whole or in part contains or is 
derived from the Program or any part thereof, to be licensed as a whole at no charge to all third parties 
under the terms of this License. 

c) If the modified program normally reads commands interactively when run, you must cause it, when 
started running for such interactive use in the most ordinary way, to print or display an announcement 
including an appropriate copyright notice and a notice that there is no warranty (or else, saying that 
you provide a warranty) and that users may redistribute the program under these conditions, and 
telling the user how to view a copy of this License. (Exception: if the Program itself is interactive but 
does not normally print such an announcement, your work based on the Program is not required to 
print an announcement.)

These requirements apply to the modified work as a whole. If identifiable sections of that work are not 
derived from the Program, and can be reasonably considered independent and separate works in 
themselves, then this License, and its terms, do not apply to those sections when you distribute them 
as separate works. But when you distribute the same sections as part of a whole which is a work based 
on the Program, the distribution of the whole must be on the terms of this License, whose permissions 
for other licensees extend to the entire whole, and thus to each and every part regardless of who wrote 
it. Thus, it is not the intent of this section to claim rights or contest your rights to work written entirely 
by you; rather, the intent is to exercise the right to control the distribution of derivative or collective 
works based on the Program. In addition, mere aggregation of another work not based on the Program 
with the Program (or with a work based on the Program) on a volume of a storage or distribution 
medium does not bring the other work under the scope of this License.