For those who don’t read the article in its entirety and want to test the feature in current stable Firefox:

Split View can be enabled in Firefox 147 and Firefox 148 from about:config by setting the browser.tabs.splitView.enabled option to true

I tried it already and it works just normal like a splitview would work. I personally don’t have a use case for it… yet. I probably rather would just open a second window instead.

I don’t even know what All Night Nippon Super Mario Bros is.

It’s basically an official licensed Romhack, mostly (if not only I think) for graphics. “All Night Nippon” was a radio show and game was sold through lottery.

https://www.mariowiki.com/All_Night_Nippon:_Super_Mario_Bros.

About time. This bugged me in the past a lot, as I like to customize my keybindings, because sometimes they conflict or interfere with my other bindings for my window manager.