[whatwg] getSelection().modify() in vertical writing modes

[Darin Adler]

Lets find at least one example of this before we say “many rich text editors”. Do they use modify? If so, do they use "left/right"?

I’m kind of surprised, since I believe WebKit invented the modify function, that it’s so widely used now! I would have expected use of execCommand instead.

    -- Darin