User blog comment:Random-storykeeper/From Sunday to shining Sunday/@comment-5557081-20130325194515/@comment-4843863-20130329174811

The terms of use thing is what the limits are on the customization. For example, the HideRail.js I've got on my wikia.js (local) is against wikia's customization policy for site-wide use (meaning admins can't put it in MediaWiki.js). See the link to customization policy in my comment above.