[Original finder here; I wrote that, I checked.] See the docs: https://github.com/zsh-users/zsh/blob/f8d93888a8efd6c8142e74ece83b38632661de47/Doc/intro.ms#L127

[Original finder here; I wrote that, I checked.] See the docs: https://github.com/zsh-users/zsh/blob/f8d93888a8efd6c8142e74ece83b38632661de47/Doc/intro.ms#L1271-L1273 https://github.com/zsh-users/zsh/blob/f8d93888a8efd6c8142e74... Relevant code: https://github.com/zsh-users/zsh/blob/f8d93888a8efd6c8142e74ece83b38632661de47/Src/Zle/zle_keymap.c#L1457-L1459 https://github.com/zsh-users/zsh/blob/f8d93888a8efd6c8142e74...