Greasy Fork is available in English.
Adds more keyboard shortcuts for YouTube. The list of all new shortcuts is added into new "More Shortcuts" section on YouTube's "Keyboard shortcuts" popup which can be accessed via "?" or SHIFT+/ key (on U.S. keyboards).
Why use one letter variable/parameter names?
It looks like the code is fucking obfuscated.
JavaScript is not math, it is a programming language. You're not supposed to use 1 letter names. It took me 10 minutes to figure out what the script was even doing.