7. Additional Terms.
“Additional permissions” are terms that supplement the terms of this License
by making exceptions from one or more of its conditions. Additional permissions
that are applicable to the entire Program shall be treated as though they were
included in this License, to the extent that they are valid under applicable
law. If additional permissions apply only to part of the Program, that part may
be used separately under those permissions, but the entire Program remains
governed by this License without regard to the additional permissions.
When you convey a copy of a covered work, you may at your option remove any
additional permissions from that copy, or from any part of it. (Additional
permissions may be written to require their own removal in certain cases when
you modify the work.) You may place additional permissions on material, added by
you to a covered work, for which you have or can give appropriate copyright
permission.
Notwithstanding any other provision of this License, for material you add to
a covered work, you may (if authorized by the copyright holders of that
material) supplement the terms of this License with terms:
- a) Disclaiming warranty or limiting liability differently from the terms
of sections 15 and 16 of this License; or
- b) Requiring preservation of specified reasonable legal notices or author
attributions in that material or in the Appropriate Legal Notices displayed by
works containing it; or
- c) Prohibiting misrepresentation of the origin of that material, or
requiring that modified versions of such material be marked in reasonable ways
as different from the original version; or
- d) Limiting the use for publicity purposes of names of licensors or
authors of the material; or
- e) Declining to grant rights under trademark law for use of some trade
names, trademarks, or service marks; or
- f) Requiring indemnification of licensors and authors of that material by
anyone who conveys the material (or modified versions of it) with contractual
assumptions of liability to the recipient, for any liability that these
contractual assumptions directly impose on those licensors and
authors.
All other non-permissive additional terms are considered “further
restrictions” within the meaning of section 10. If the Program as you received
it, or any part of it, contains a notice stating that it is governed by this
License along with a term that is a further restriction, you may remove that
term. If a license document contains a further restriction but permits
relicensing or conveying under this License, you may add to a covered work
material governed by the terms of that license document, provided that the
further restriction does not survive such relicensing or conveying.
If you add terms to a covered work in accord with this section, you must
place, in the relevant source files, a statement of the additional terms that
apply to those files, or a notice indicating where to find the applicable
terms.
Additional terms, permissive or non-permissive, may be stated in the form of
a separately written license, or stated as exceptions; the above requirements
apply either way.