HTML 5 Cache Manifest Vs. Etags, Expires or cache-control header

Question

Can someone explain to me how HTML 5\'s cache manifest differs from using other file header techniques for telling the browser to cache the file?

Answer 1

I 'believe' that the primary difference between regular disk cache and the new html5 offline cache is that when working offline (or without internet connection), traditional disk cache would not be used or available to render the page, whereas the offline cache will.