I think you're referring to the "inlay hint" API, which is different from being able to visualize any HTML in the current text editor, like Hydrogen is able to:

I think you're referring to the "inlay hint" API, which is different from being able to visualize any HTML in the current text editor, like Hydrogen is able to: https://cloud.githubusercontent.com/assets/13285808/20360886/7e03e524-ac03-11e6-9176-37677f226619.gif https://cloud.githubusercontent.com/assets/13285808/20360886...