you legal permission to copy, distribute and/or modify it.</p>
<p>For the developers’ and authors’ protection, the GPL clearly explains that there is no warranty for this free software. For both users’ and authors’ sake, the GPL requires that modified versions be marked as changed, so that their problems will not be attributed erroneously to authors of previous versions.</p>
<p>Some devices are designed to deny users access to install or run modified versions of the software inside them, although th