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Termination

You may not copy, modify, sublicense, or distribute the Document except as

expressly provided for under this License. Any other attempt to copy, modify,

sublicense or distribute the Document is void, and will automatically terminate

your rights under this License. However, parties who have received copies, or

rights, from you under this License will not have their licenses terminated so

long as such parties remain in full compliance.

Future Revisions of This License

The Free Software Foundation may publish new, revised versions of the GNU

Free Documentation 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. See http://www.gnu.org/copyleft/.

Each version of the License is given a distinguishing version number. If the

Document specifies that a particular numbered version of this License  or any

later version  applies to it, you have the option of following the terms and

conditions either of that specified version or of any later version that has been

published (not as a draft) by the Free Software Foundation. If the Document

does not specify a version number of this License, you may choose any version

ever published (not as a draft) by the Free Software Foundation.