Comment by groby_b

Hardly a "new" concept. MS Research did something akin to his different functions on one light table. Displaying HTML in the REPL is (I believe) a Factor thing, amongst others. Documentation everywhere is supported by any decent IDE these days.(Except it's usually a hover tip, not a separate window). Code is not a file is the subject of entire Internet rants.

Don't get me wrong, this is cool when you tie it together. But it's hardly new. I'm inclined to say it would benefit from research into what others have done, but maybe I'm wrong. Maybe you really need to be unencumbered by old ideas to push this again, and maybe succeed this time.