@item
When a music function (as opposed to an event function) returns an
expression of type post-event, LilyPond requires one of the named
-direction indicators (@code{-}, @code{^}, @w{and @code{_}})) in order to
+direction indicators (@code{-}, @code{^}, @w{and @code{_}}) in order to
properly integrate the post-event produced by the music function call
into the surrounding expression.