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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 trans-
ferring 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 de-
rived 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 com-
mands 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 an-
nouncement, 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
OPEN SOURCE LICENSE
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.
3. You may copy and distribute the Program (or a
work based on it, under Section 2) in object code
or executable form under the terms of Sections 1
and 2 above provided that you also do one of the
following:
a) Accompany it with the complete correspond-
ing machine-readable source code, which must
be distributed under the terms of Sections 1
and 2 above on a medium customarily used for
software interchange; or,
b) Accompany it with a written offer, valid for
at least three years, to give any third party, for
a charge no more than your cost of physically
performing source distribution, a complete
machine-readable copy of the corresponding
source code, to be distributed under the terms
of Sections 1 and 2 above on a medium cus-
tomarily used for software interchange; or,
c) Accompany it with the information you re-
ceived as to the offer to distribute correspond-
ing source code. (This alternative is allowed
only for noncommercial distribution and only
if you received the program in object code or
executable form with such an offer, in accord
with Subsection b above.)
The source code for a work means the preferred
form of the work for making modifications to it. For
an executable work, complete source code means
all the source code for all modules it contains, plus
157
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