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an.appropriate.copyright.notice.and.disclaimer.
of warranty; keep intact all the notices that re
-
fer.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 op
-
tion.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.dis-
tribute or publish, that in whole or in part con
-
tains. 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 inter
-
active use in the most ordinary way, to print
or. display. an. announcement. including. an. ap-
propriate. 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.announce-
ment, 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 de
-
rived 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.distrib-
ute.the.same.sections.as.part.of.a.whole.which.
is a work based on the Program, the distribu
-
tion.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.en-
tirely 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 ob
-
ject.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. corre-
sponding 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.physi-
cally 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.custom-
arily 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.ex-
ecutable 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 any associated interface defini
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