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@@ -644,6 +644,10 @@ or before @samp{)}, @samp{:} or @samp{?}); and
@code{fill-polish-nobreak-p} (don't break after a one letter word,
even if preceded by a non-whitespace character).
+ Emacs can display an indicator in the @code{fill-column} position
+using the Display fill column indicator mode
+(@xref{Displaying Boundaries, display-fill-column-indicator}).
+
@node Fill Prefix
@subsection The Fill Prefix