4. License and copyright
4.1 - What license is PunBB released under?
PunBB is released under The GNU General Public License. In short terms this means that PunBB is free to download, use, distribute, modify and even charge for. However, if any of these modifications are released to the public, that code must also be released under the same license as PunBB.
4.2 - May I remove the copyright from the page footer?
Yes, but please don't. If you must, please try to keep at least "Powered by PunBB" with the link to www.punbb.org intact.
4.3 - May I add my own copyright to the page footer?
Yes, but you may not alter the original copyright in such a way that it loses it's original "meaning". It must, in other words, be absolutely clear who is the copyright holder of PunBB. Adding an additional line with your copyright notice is OK.
4.4 - May I remove the copyright from the source code?
No. The copyright notice in all the source files must be left intact. Any modification or removal of this copyright is illegal under the terms of the GNU General Public Licence.