This section is intended to make thoroughly clear what is believed to be a
consequence of the rest of this License .
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9 . 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 .
10 . 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 differ in detail to address new problems or
concerns .
Each version is given a distinguishing version number . If the Program specifies
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 .
11 . If you wish to incorporate parts of the Program into other free programs whose
distribution conditions are different, 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 .
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