User's Manual

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software distribution system, which is implemented by
public license practices. Many people have made generous
contributions to the wide range of software distributed
through that system in reliance on consistent application
of that system; it is up to the author/donor to decide if he
or she is willing to distribute software through any other
system and a licensee cannot impose that choice.
This section is intended to make thoroughly clear what is
believed to be a consequence of the rest of this License.
8. If the distribution and/or use of the Program is restricted
in certain countries either by patents or by copyrighted
interfaces, the original copyright holder who places
the Program under this License may add an explicit
geographical distribution limitation excluding those
countries, so that distribution is permitted only in or
among countries not thus excluded. In such case, this
License incorporates the limitation as if written in the body
of this License.
9. The Free Software Foundation may publish revised and/
or new versions of the General Public License from time
to time. Such new versions will be similar in spirit to the
present version, but may dier in detail to address new
problems or concerns.
Each version is given a distinguishing version number. If
the Program species a version number of this License
which applies to it and “any later version”, you have the
option of following the terms and conditions either of
that version or of any later version published by the Free
Software Foundation. If the Program does not specify
a version number of this License, you may choose any
version ever published by the Free Software Foundation.
10. If you wish to incorporate parts of the Program into other
free programs whose distribution conditions are dierent,
write to the author to ask for permission.
For software which is copyrighted by the Free Software
Foundation, write to the Free Software Foundation; we
sometimes make exceptions for this. Our decision will be
guided by the two goals of preserving the free status of
all derivatives of our free software and of promoting the
sharing and reuse of software generally.