Clipboard macro how to

How do i set up a lightning-fast system clipboard copy and paste? (https://github.com/kyx0r/nextvi/issues/124) I know i need to use the `EXINIT` env var, but i can't figure it out, even though the README provides a direct example: ``` export EXINIT="$(printf '%b' 'e:& io{\n}\x16\x3kA\x3:& 1G:& 2"aY')" Setup @ macro in register <a> ```