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.