Work that took place within HTML5 that is now continued elsewhere for mostly political reasons.
|Content-Type Processing Model||Content-Type Processing Model|
|Server-Sent Events||Server-Sent Events|
Now called Hypertext Reference (HRef)
Also, this specification is known to have a ton of issues and is out of sync with the old HTML5 definition.
|Web Database||Web Database||SQL storage|
|Web Storage||Web Storage||localStorage & sessionStorage|
|Origin (now Sec-From)|
|Selectors API||(Was just an "XXX" issue marker in HTML5)|