Claim 'There's no simple "copy"—you "kill" then immediately "yank" back' is not true

[MatthewVernon]

Hi,

Thanks for this guide, which I'm enjoying :)

I notice you say in the Philosophy section: 'There's no simple "copy"—you "kill" then immediately "yank" back', but this isn't true - M-w is copy-to-kill ring, and it's something I use quite often...

(it gets mentioned on the reference card too https://www.gnu.org/software/emacs/refcards/pdf/refcard.pdf so I don't think this is a nice/obscure thing).

So probably worth noting?