Not sure if you got what I meant. I know what a HTML-developer (web-developer) does. I am asking what the developers OF html is doing. How do they create HTML.

Not sure if you got what I meant. I know what a HTML-developer (web-developer) does. I am asking what the developers OF html is doing. How do they create HTML. HTML is pretty abstract since it is a set of rules/words (html,head etc) that the browsers will read.