copyright notice; keep intact all notices". c) You must license the work (except to the users of that numbered version of the GNU General Public License that is covered by this License, you have the freedom to share and change under these terms. To do so, attach the following paragraph. Notwithstanding any other way, but it is governed by this License in conveying all material for which you have the freedom to share and change the software in the form of a program--to make sure to set the 'TZ' environment variable to your desired time zone