You may copy and distribute a Modified Version of the Document under the conditions of
sections 2 and 3 above, provided that you release
the Modified Version under precisely this License, with the
Modified Version filling the role of the Document, thus
licensing distribution and modification of the Modified Version
to whoever possesses a copy of it. In addition, you must do
these things in the Modified Version:
Use in the Title
Page (and on the covers, if any) a title distinct
from that of the Document, and from those of
previous versions (which should, if there were any, be
listed in the History section of the Document). You may
use the same title as a previous version if the original
publisher of that version gives permission.
List on the Title
Page, as authors, one or more persons or entities
responsible for authorship of the modifications in the
Modified Version,
together with at least five of the principal authors of
the Document (all of
its principal authors, if it has less than five).
State on the Title
Page the name of the publisher of the Modified Version, as the
publisher.
Preserve all the copyright notices of the Document.
Add an appropriate copyright notice for your modifications
adjacent to the other copyright notices.
Include, immediately after the copyright notices, a
license notice giving the public permission to use the
Modified Version under
the terms of this License, in the form shown in the
Addendum below.
Preserve in that license notice the full lists of  Invariant Sections and
required Cover
Texts given in the Document's license notice.
Include an unaltered copy of this License.
Preserve the section entitled History, and
its title, and add to it an item stating at least the
title, year, new authors, and publisher of the Modified Version as given on
the Title Page.  If
there is no section entitled History in the
Document, create one
stating the title, year, authors, and publisher of the
Document as given on its Title Page, then add an item
describing the Modified Version as stated in the previous
sentence.
Preserve the network location, if any, given in the Document for public access
to a Transparent
copy of the Document, and likewise the network locations
given in the Document for previous versions it was based
on. These may be placed in the History
section.  You may omit a network location for a work that
was published at least four years before the Document
itself, or if the original publisher of the version it
refers to gives permission.
In any section entitled Acknowledgements or
Dedications, preserve the section's title,
and preserve in the section all the substance and tone of
each of the contributor acknowledgements and/or
dedications given therein.
Preserve all the Invariant
Sections of the Document, unaltered in their
text and in their titles.  Section numbers or the
equivalent are not considered part of the section titles.
Delete any section entitled
Endorsements. Such a section may not be
included in the Modified
Version.
Do not retitle any existing section as
Endorsements or to conflict in title with
any Invariant
Section.
If the Modified Version
includes new front-matter sections or appendices that qualify as
Secondary Sections and
contain no material copied from the Document, you may at your
option designate some or all of these sections as invariant. To
do this, add their titles to the list of Invariant Sections in the
Modified Version's license notice.  These titles must be
distinct from any other section titles.
You may add a section entitled Endorsements,
provided it contains nothing but endorsements of your Modified Version by various
parties--for example, statements of peer review or that the text
has been approved by an organization as the authoritative
definition of a standard.
You may add a passage of up to five words as a Front-Cover Text, and a passage
of up to 25 words as a Back-Cover Text, to the end of
the list of Cover Texts
in the Modified Version.
Only one passage of Front-Cover Text and one of Back-Cover Text
may be added by (or through arrangements made by) any one
entity. If the Document
already includes a cover text for the same cover, previously
added by you or by arrangement made by the same entity you are
acting on behalf of, you may not add another; but you may
replace the old one, on explicit permission from the previous
publisher that added the old one.
The author(s) and publisher(s) of the Document do not by this License
give permission to use their names for publicity for or to
assert or imply endorsement of any Modified Version .
