4. You may not copy, modify, sublicense, or distribute the Program
except as expressly provided under this License. Any attempt other-
wise to copy, modify, sublicense or distribute the Program is void,
and will automatically terminate your rights under this License.
However, parties who have received copies, or rights, from you un-
der this License will not have their licenses terminated so long as
such parties remain in full compliance.
5. You are not required to accept this License, since you have not si-
gned it. However, nothing else grants you permission to modify or
distribute the Program or its derivative works. These actions are pro-
hibited by law if you do not accept this License. Therefore, by mo-
difying or distributing the Program (or any work based on the Pro-
gram), you indicate your acceptance of this License to do so, and all
its terms and conditions for copying, distributing or modifying the
Program or works based on it.
6. Each time you redistribute the Program (or any work based on the
Program), the recipient automatically receives a license from the origi-
nal licensor to copy, distribute or modify the Program subject to these
terms and conditions. You may not impose any further restrictions on
the recipients' exercise of the rights granted herein. You are not res-
ponsible for enforcing compliance by third parties to this License.
7. If, as a consequence of a court judgment or allegation of patent in-
fringement or for any other reason (not limited to patent issues), con-
ditions are imposed on you (whether by court order, agreement or
otherwise) that contradict the conditions of this License, they do not
excuse you from the conditions of this License.
If you cannot distribute so as to satisfy simultaneously your obliga-
tions under this License and any other pertinent obligations, then as a
consequence you may not distribute the Program at all. For example,
if a patent license would not permit royalty-free redistribution of the
Program by all those who receive copies directly or indirectly through
you, then the only way you could satisfy both it and this License
would be to refrain entirely from distribution of the Program.
If any portion of this section is held invalid or unenforceable under
any particular circumstance, the balance of the section is intended
to apply and the section as a whole is intended to apply in other cir-
cumstances.
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