mattur - 11:31 pm on Mar 28, 2013 (gmt 0)
Sorry, it's not clear what you mean - why do we need version indicators? The point of a continuous development model ("Living Standard") is that version indicators are not needed.
The only reason there is a doctype declaration at all is to trigger quirks/almost standards/standards layout mode in browsers.
CSS and JS work just fine without version indicators. HTML did previously use version indicators, but for purely theological reasons. :)
So the OP can just use <doctype html> and not have to worry about all this stuff.