Board Thread:Support Requests - Getting Technical/@comment-5558012-20140308033128

I've been wondering this for a while and just now decided to ask. What is the difference between using  'w:c:dev:Example/code.js', 'w:dev:Example/code.js' , and 'u:dev:Example/code.js' ? Is one method more effective/efficient than the others? If so, why? 