Emacs-lisp mode indents comments based on the number of semi-colons prefixing them.
One semi-colon indents to column 40.
Two semi-colons indent to the same level as the block you are in.
Three semi-colons indent to wherever you place it and don’t move if you press
;;; column: ;;;34567890123456789012345678901234567890123456789 ; one semi-colon (when (some case) ;; two semi-colons indents to the appropriate level (second line) ) ;; two semi-colons indents to the appropriate level ;;; I want this comment to stay right here