For example, if a patent license would not permit royalty-free redistribution of the Program by all thosewho receive copies directly or indirectly through you, then the only way you could satisfy both it and thisLicense would be to refrain entirely from distribution of the Program.If any portion of this section is held invalid or unenforceable under any particular circumstance, thebalance of the section is intended to apply and the section as a whole is intended to apply in othercircumstances.It is not the purpose of this section to induce you to infringe any patents or other property right claims orto contest validity of any such claims; this section has the sole purpose of protecting the integrity of thefree software distribution system, which is implemented by public license practices. Many people havemade generous contributions to the wide range of software distributed through that system in reliance onconsistent application of that system; it is up to the author/donor to decide if he or she is willing todistribute 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 thisLicense.8. If the distribution and/or use of the Program is restricted in certain countries either by patents or bycopyrighted interfaces, the original copyright holder who places the Program under this License may addan explicit geographical distribution limitation excluding those countries, so that distribution is permittedonly in or among countries not thus excluded. In such case, this License incorporates the limitation as ifwritten in the body of this License.9. The Free Software Foundation may publish revised and/or new versions of the General PublicLicense from time to time. Such new versions will be similar in spirit to the present version, but may differin detail to address new problems or concerns.Each version is given a distinguishing version number. If the Program specifies a version number of thisLicense which applies to it and "any later version", you have the option of following the terms andconditions either of that version or of any later version published by the Free Software Foundation. If theProgram does not specify a version number of this License, you may choose any version ever publishedby the Free Software Foundation.10. If you wish to incorporate parts of the Program into other free programs whose distribution conditionsare different, write to the author to ask for permission. For software which is copyrighted by the FreeSoftware 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 freesoftware and of promoting the sharing and reuse of software generally.NO WARRANTY11. BECAUSE THE PROGRAM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FORTHE PROGRAM, TO THE EXTENT PERMITTED BY APPLICABLE LAW. EXCEPT WHENOTHERWISE STATED IN WRITING THE COPYRIGHT HOLDERS AND/OR OTHER PARTIES221