The editor extension provides spelling and grammar help in textareas. But it is bad. I could have installed it for Edge or Chrome, and I'm so glad I didn't install it for Chrome! Like, right now it has textareas underlined as misspelled. Is it? I don't think so; but unlike Word, there is no option to "add to Dictionary". Plus, the Premium version is $6/month. I guess the thinking is: "that is half the price of Grammarly"; but $60/a year seems to me like a ton of money to catch typos. And it doesn't catch them all. Plus, it's spelling suggestions are pretty terrible. I can misspell a word, and it won't know what I am trying to spell, but I can put my misspelling into Google, and Google knows exactly what word I meant. Something can be free, or it can be good, but it can't suck and want $6. That said, the idea seems cool, so maybe I'll try out Grammarly now that I am planning on doing stuff in WordPress.