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3. Protecting Users’ Legal Rights From Anti-
Circumvention Law.
No covered work shall be deemed part of
an effective technological measure under any
applicable law fulfi lling obligations under article
11 of the WIPO copyright treaty adopted on 20
December 1996, or similar laws prohibiting or
restricting circumvention of such measures.
When you convey a covered work, you waive any
legal power to forbid circumvention of technological
measures to the extent such circumvention is
effected by exercising rights under this License with
respect to the covered work, and you disclaim any
intention to limit operation or modifi cation of the
work as a means of enforcing, against the work’s
users, your or third parties’ legal rights to forbid
circumvention of technological measures.
4. Conveying Verbatim Copies.
You may convey 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; keep intact all notices stating that
this License and any non-permissive terms added
in accord with section 7 apply to the code; keep
intact all notices of the absence of any warranty;
and give all recipients a copy of this License along
with the Program.
You may charge any price or no price for each
copy that you convey, and you may offer support or
warranty protection for a fee.
5. Conveying Modifi ed Source Versions.
You may convey a work based on the Program,
or the modifi cations to produce it from the Program,
in the form of source code under the terms of
section 4, provided that you also meet all of these
conditions:
a) The work must carry prominent notices stating
that you modifi ed it, and giving a relevant date.
b) The work must carry prominent notices
stating that it is released under this License and any
conditions added under section 7. This requirement
modifi es the requirement in section 4 to “keep
intact all notices”.
c) You must license the entire work, as a whole,
under this License to anyone who comes into
possession of a copy. This License will therefore
apply, along with any applicable section 7 additional
terms, to the whole of the work, and all its parts,
regardless of how they are packaged. This License
gives no permission to license the work in any other
way, but it does not invalidate such permission if
you have separately received it.
d) If the work has interactive user interfaces,
each must display Appropriate Legal Notices;
however, if the Program has interactive interfaces
that do not display Appropriate Legal Notices, your
work need not make them do so.
A compilation of a covered work with other
separate and independent works, which are not by
their nature extensions of the covered work, and
which are not combined with it such as to form
a larger program, in or on a volume of a storage
or distribution medium, is called an “aggregate”
if the compilation and its resulting copyright are
not used to limit the access or legal rights of the
compilation’s users beyond what the individual
works permit. Inclusion of a covered work in an
aggregate does not cause this License to apply to
the other parts of the aggregate.
6. Conveying Non-Source Forms.
You may convey a covered work in object code
form under the terms of sections 4 and 5, provided
that you also convey the machine-readable
Corresponding Source under the terms of this
License, in one of these ways:
a) Convey the object code in, or embodied in, a
physical product (including a physical distribution
medium), accompanied by the Corresponding
Source fi xed on a durable physical medium
customarily used for software interchange.
b) Convey the object code in, or embodied in, a
physical product (including a physical distribution
medium), accompanied by a written offer, valid
for at least three years and valid for as long as
you offer spare parts or customer support for that
product model, to give anyone who possesses the
object code either (1) a copy of the Corresponding
Source for all the software in the product that is
covered by this License, on a durable physical
medium customarily used for software interchange,
for a price no more than your reasonable cost of
physically performing this conveying of source, or
(2) access to copy the Corresponding Source from
a network server at no charge.
c) Convey individual copies of the object code
with a copy of the written offer to provide the
Corresponding Source. This alternative is allowed
only occasionally and noncommercially, and only if
you received the object code with such an offer, in
accord with subsection 6b.
d) Convey the object code by offering access
from a designated place (gratis or for a charge),
and offer equivalent access to the Corresponding
Source in the same way through the same place at
no further charge. You need not require recipients
to copy the Corresponding Source along with the
