Z:gnu-www-ja-gpl-faq--c85a13-Some templates make calls into/en

Some templates make calls into JavaScript functions. Since Javascript is often non-trivial, it is worth copylefting. Because the templates will be combined with user data, it's possible that template+user data+JavaScript would be considered one work under copyright law. A line needs to be drawn between the JavaScript (copylefted), and the user code (usually under incompatible terms).