Great to see this feature.
A trivial item - the description for remove book jacket is the same as book jacket (aka insert book jacket).
As for the name, I'd have to agree that my first thought (especially since P was capitalized) was that it was about the Polish language
But reading the details definitely made it interesting. Not that choosing another name doesn't have its own issues. Tweak is already taken
Maybe Modify, Tidy, Clean... Sometimes harder choosing the name than coding the function
