I never used it, building my own machinery instead. And, it seems,
this doesn't work with Emacs's default comment-filling machinery.
(setq scroll-step 5) ;Don't scroll too much at a time
(setq blink-cursor-blinks 0) ;Keep blinking the cursor
(setq-default fill-column mdw-text-width) ;I use rather narrow windows
+(setq adaptive-fill-mode nil) ;I have my own machinery instead
(setq reb-re-syntax 'string) ;Enough backslashes even with this
(setq-default comment-column 40) ;Set a standard comment column
(setq-default truncate-partial-width-windows nil