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
