How did I get to know all this? After one evening of fiddling around with the engine with the help from the tutorial, I had laid the basics for an HTML5 version of The Mana World, which I called TMW.js. It's lacking a few details, but I daresay it's possible to fill in the blanks!
Update 2013-05: While there is no longer a live version of TMW.js, the code of this demo is still available at http://github.com/bjorn/mana.js, including some experimental multiplayer functionality.
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