Ah it sits between the intro ( https://www.gnu.org/software/emacs/manual/html_mono/eintr.html https://www.gnu.org/software/emacs/manual/html_mono/eintr.ht... )

Ah it sits between the intro ( https://www.gnu.org/software/emacs/manual/html_mono/eintr.html https://www.gnu.org/software/emacs/manual/html_mono/eintr.ht... ) and the reference manual.