I'm currently writing a plugin that displays some images - possibly with captions. So, I was wondering whether to use XHTML (
<span>s) or HTML 5 (
<figurecaption>) for output.
I image that the answer to this question depends somewhat on the theme being used. Is there a way to figure out which output format the user's theme is using? Or what's the best approach here? What's Wordpress doing to solve this issue?