Sometimes I see things that are not supported by HTML5 and other times there are things new to only html5.
If I am looking at a method of installing image to a page, and there is no supported by html5 I figure, that is ok because that may be new, and I know somewhere in there "plan ahead for the future" not stick with the old. but I dont know what that matters. I figure if it is a tried and true way of "HTML" than a browser is strolling along, how would the HTML version before html5 be negatively effected. perhaps there could be a link at the html5 warnings where you could click that to see the similar method that is html5. what to do here?
Not sure weather I should care about this yet. until I get the beginning "old fashion" understood better than work with new?