Quickly display your quick side notes in quick side window.
Side notes live in a file in the current directory or any parent directory thereof. The filename to look for is defined by custom option side-notes-file, which defaults to "notes.txt".
Add something like the following to your init file:
(define-key (current-global-map) (kbd "M-s n") #'side-notes-toggle-notes)
Send an email to ~email@example.com.