I'm amazed at how often I still "discover" a new HTML5 element. I say discover because really they're all written down in specs. But then again, who reads specs for their enjoyment?

Today I discovered the meter-element (by first discovering the progress-element). They're essentially the same, except that <meter> also adds some sugary deliciousness in the form of colouring. It's here that you should note that IE10 (and higher) only support <progress> at the moment and not <meter>. So while both elements are rendered pretty much the same by browsers, it's the semantic meaning that you have to pick.