Are you claiming you can paste in your own copy, and it will run against it? I see no text area in Chrome or Safari, what am I missing?

You're missing a stupid CSS trick; apparently everything should be flat flat flat nowadays, even if that means throwing UX out of the window. The sample text is editable, even though it looks as if it's not.

Thanks, I feel dumb and I feel it is dumb design. I should've known, and did figure it out eventually, but that won't pass the grandma test, and yes, it is a CLI tool, but so what. If a wanna be developer can't figure it out, the cli tool may have just as many different conventions from other cli tools as well.

Doesn't work at all in Firefox... it's just an editable page with no underlines or annotations. I was really confused until I tried with Chrome.

The entire page is editable for me in Chrome and Safari