Admin Forum:Global.js or Common.js or Wikia.js ???

Depending on which parts of the help you read, you get the advice to edit either global.js, common.js or wikia.js to create site-wide changes for all users. Which one is it? Or are all of them used? If so, is there a load order?

And as a follow-up question: Which stylesheet creates site-wide changes for all users?

Pecoes 00:49, February 13, 2012 (UTC)