326
Mozilla wants users to take part in a survey about browser features
(connect.mozilla.org)
A place to discuss the news and latest developments on the open-source browser Firefox
You can do that with command line arguments
Not with FF. Well, not without massive CSS app customization and separate profiles which is not officially supported.
Yes you can. Try running Firefox --help
No, you cannot. There have been tickets open about this for ages. You are talking about opening a URL, not a PWA.